Academic literature on the topic 'Woylie'

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Journal articles on the topic "Woylie"

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Wayne, A. F., M. A. Maxwell, C. G. Ward, C. V. Vellios, B. G. Ward, G. L. Liddelow, I. Wilson, J. C. Wayne, and M. R. Williams. "Importance of getting the numbers right: quantifying the rapid and substantial decline of an abundant marsupial, Bettongia penicillata." Wildlife Research 40, no. 3 (2013): 169. http://dx.doi.org/10.1071/wr12115.

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Context A reliable measure of population size is fundamental to ecology and conservation but is often difficult to obtain. The woylie, Bettongia penicillata, provides an example where ‘getting the numbers right’ has important implications in verifying and quantifying the recent unexpected, rapid and substantial declines across much of its range. Initial estimates prompted a conservation-status upgrade for the species to Endangered by the Australian Government. The present paper constitutes the foundational paper addressing the first steps of a decline diagnosis framework intended to identify the causes of the recent declines. Aims To verify whether the declines in woylie trap-capture rates are representative of population change; better quantify the size of the largest woylie populations; and review what is understood about the ecology of the woylie and identify key knowledge gaps that may be relevant to identifying the causes of the recent declines. Methods Monitoring data from live-cage trapping (transects and grids), sandpads, woylie diggings and nest-density surveys and spotlighting were collated. Population measures derived from trapping data included capture rates, number of individuals, abundance estimates based on capture–mark–recapture modelling and density using spatially explicit capture–recapture models (SECR). Key results The declines in woylie trap-capture rates were verified as real population declines and corresponded closely with other measures of abundance derived from the same trapping data as well as with independent measures. A 95% decline occurred in the largest extant woylie populations (in the Upper Warren region, Western Australia) between 2002 and 2008. At a species level, woylies declined ~90% (1999–2006), from a peak of ~200 000 individuals in 1999. Conclusions An accurate formal conservation status is an important factor in promoting the conservation of a species. It is recommended that the woylie be considered for Critically Endangered status under the Australian EPBC Act. Implications Adequate and effective monitoring of species is critical to detecting and quantifying population changes in a timely manner. Having an accurate measure of population size can have a significant impact on the effectiveness of conservation and management efforts.
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SMITH, A., P. CLARK, S. AVERIS, A. J. LYMBERY, A. F. WAYNE, K. D. MORRIS, and R. C. A. THOMPSON. "Trypanosomes in a declining species of threatened Australian marsupial, the brush-tailed bettong Bettongia penicillata (Marsupialia: Potoroidae)." Parasitology 135, no. 11 (August 28, 2008): 1329–35. http://dx.doi.org/10.1017/s0031182008004824.

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SUMMARYThe brush-tailed bettong (Bettongia penicillata), or woylie, is a medium-sized macropod marsupial that has undergone a rapid and substantial decline throughout its home range in the Upper Warren region of Western Australia over a period of approximately 5 years. As part of an investigation into possible causes of the decline a morphologically distinct Trypanosoma sp. was discovered by light microscopy in the declining population but was absent in a stable population within the Karakamia Wildlife Sanctuary. Further investigations employing molecular methods targeting variations in the 18s rRNA gene determined that the trypanosome was novel and was also present within the Karakamia population albeit at a much lower overall prevalence and individual parasitaemia levels. Phylogenetic analysis suggests the novel Trypanosoma sp. to be closely related to other trypanosomes isolated from native Australian wildlife species. Although it appears unlikely that the parasite is solely responsible for the decline in woylie population size, it may (singularly or in conjunction with other infectious agents) predispose woylies to increased mortality.
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Wayne, Adrian. "New Conservation Initiative to Save the Woylie from Extinction in the Wild." Pacific Conservation Biology 15, no. 4 (2009): 233. http://dx.doi.org/10.1071/pc090233.

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Six hundred thousand dollars was recently pledged by the Western Australian (WA) Government to fund an Emergency Conservation Action plan for the Woylie Bettongia penicillata ogilbyi to establish insurance populations at risk of extinction in the wild. $500,000 will be used by The Department of Environment and Conservation to establish a 400 ha predator-free enclosure in the Perup Nature Reserve (300 km south of Perth, WA) that should be capable of naturally supporting up to 500 woylies. At least 40 founders will be sourced from the surrounding area, which previously constituted the largest of three indigenous populations that persisted after pan-continental declines of the species in the 19th and 20th centuries.
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Zosky, Kerry L., Adrian F. Wayne, Kate A. Bryant, Michael C. Calver, and Fiona R. Scarff. "Diet of the critically endangered woylie (Bettongia penicillata ogilbyi) in south-western Australia." Australian Journal of Zoology 65, no. 5 (2017): 302. http://dx.doi.org/10.1071/zo17080.

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To assist the management of the critically endangered woylie (Bettongia penicillata ogilbyi), a quantitative study of its diet was conducted across five of the larger subpopulations in south-western Australia. There was a close match between dietary composition established from foregut contents and faecal pellets. Woylies were predominantly mycophagous in all subpopulations, but consumed a broad diet including invertebrates, seeds and other plant material. Individuals in a high-density, fenced subpopulation ate significantly less fungi than free-ranging animals from lower-density subpopulations. Dietary composition did not vary significantly amongst subpopulations in the Upper Warren region, where a range of population densities was observed. Altogether, 79 fungal spore classes were identified, including at least 15 genera from 14 families. Sampling across one year showed that fungi made up a larger fraction of the diet in autumn or winter, and greater diversities of fungi were consumed at these times than at other times of year. This information is essential to provide valuable ecological context for effective population management of woylies, as well as identification and conservation of important habitats.
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Yeatman, Georgina J., and Adrian F. Wayne. "Seasonal home range and habitat use of a critically endangered marsupial (Bettongia penicillata ogilbyi) inside and outside a predator-proof sanctuary." Australian Mammalogy 37, no. 2 (2015): 157. http://dx.doi.org/10.1071/am14022.

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An understanding of the factors that influence the distribution of the woylie (Bettongia penicillata ogilbyi) at local and regional scales has been identified as a key knowledge gap, because such knowledge may assist in the recovery of this endangered species. We aimed to investigate the seasonal home-range size and habitat use of woylies to update current knowledge of the species in the context of a substantial decline. Specifically, we examined the home range and habitat use of woylies reintroduced into a sanctuary free from invasive predators and compared these data to those from an external reference site. Eight woylies inside the sanctuary and seven outside were radio-tracked in autumn 2011. The average home-range size was 65.4 (±8.2, s.e.) ha. There was little evidence to suggest any difference in home-range size between woylies inside and outside the sanctuary. Woylies were more likely to be found in the slope and low-lying valley habitats, which have greater water-holding capacity and sandier soils. These relatively large seasonal home ranges, compared with previously published estimates for the species, may be accounted for by low population density, lower seasonal food availability and clustered food distribution. Monitoring the home-range size of woylies within the sanctuary may assist in identifying the carrying capacity of the sanctuary, which has implications for how this population is managed.
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Marlow, Nicola J., Neil D. Thomas, Andrew A. E. Williams, Brian Macmahon, John Lawson, Yvette Hitchen, John Angus, and Oliver Berry. "Cats (Felis catus) are more abundant and are the dominant predator of woylies (Bettongia penicillata) after sustained fox (Vulpes vulpes) control." Australian Journal of Zoology 63, no. 1 (2015): 18. http://dx.doi.org/10.1071/zo14024.

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The control of foxes (Vulpes vulpes) is a key component of many fauna recovery programs in Australia. A question crucial to the success of these programs is how fox control influences feral cat abundance and subsequently affects predation upon native fauna. Historically, this question has been difficult to address because invasive predators are typically challenging to monitor. Here, non-invasive DNA analysis was used to determine the fate of radio-collared woylies (Bettongia penicillata) in two reserves in a mesic environment where foxes had been controlled intensively for over two decades. Woylie trap success had increased more than 20-fold after fox baiting commenced in the 1980s but decreased precipitously in 2000. Ninety-eight monitored woylies were killed between 2006 and 2009. DNA analysis of swabs taken from radio-collars and carcasses of these woylies indicated that predation by cats (Felis catus) caused most mortalities (65%) and was three times the fox predation rate (21%). Also, indices of cat abundance were higher in fox-baited sites where foxes were less abundant. Predation on woylies by cats was greater than previously recognised and, by implication, may significantly reduce the effectiveness of fox control programs throughout Australia. Integrated fox and cat control is essential to ensure the success of fauna recovery programs.
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Thompson, Craig K., Adrian F. Wayne, Stephanie S. Godfrey, and R. C. Andrew Thompson. "Survival, age estimation and sexual maturity of pouch young of the brush-tailed bettong (Bettongia penicillata) in captivity." Australian Mammalogy 37, no. 1 (2015): 29. http://dx.doi.org/10.1071/am14025.

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The brush-tailed bettong or woylie (Bettongia penicillata) is a continuous and rapid breeder. However, research investigating the monthly survival and development of young woylies from parturition to parental independence is incomplete. The reproductive biology of eight female woylies was observed for 22 consecutive months within a purpose-built enclosure. Adult female woylies bred continuously and were observed caring for a dependant young 96% of the time. Pouch life of the young was ~102 days, with sexual maturity of female offspring reached as early as 122 days post partum. Crown–rump measurement was an accurate predictor of age for young restricted to the pouch, while skeletal morphometrics were a better predictor of age for ejected pouch young, young-at-foot and subadults. A four-month period between May and August of each study year accounted for 85% of pouch young mortality and 61% of pouch young births where the neonate went on to survive to subadult age. Here we discuss the possibility that pouch young born during the cooler, wetter months of May to August may have an increased chance of survival in the wild, resulting from an increased maternal investment being directed towards the rearing of ‘fitter’ progeny.
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Hing, Stephanie, Krista L. Jones, Christine Rafferty, R. C. Andrew Thompson, Edward J. Narayan, and Stephanie S. Godfrey. "Wildlife in the line of fire: evaluating the stress physiology of a critically endangered Australian marsupial after bushfire." Australian Journal of Zoology 64, no. 6 (2016): 385. http://dx.doi.org/10.1071/zo16082.

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Australian native fauna are thought to be well adapted to fire-prone landscapes, but bushfires may still pose considerable challenges or stressors to wildlife. We investigated the impact of bushfire on the stress physiology of the woylie (brush-tailed bettong, Bettongia penicillata) a critically endangered Australian marsupial, and assessed whether fitness indices (body condition and parasite load) influenced stress physiology before and after the fire. We hypothesised that there would be a significant change in stress physiology indicators (in the form of faecal cortisol metabolites, FCM) following the fire, compared with the months previous. We trapped woylies (n = 19) at Whiteman Park Reserve in Perth, Western Australia, two days after a major bushfire and measured FCM concentration by enzyme immunoassay. Population-level comparisons of FCM were made between these samples and those collected in previous months (n = 58). While mean FCM varied by month of sample collection, it was not higher after the fire. We suggest that woylies may be able to maintain homeostasis through change (allostasis), at least in the period immediately after the fire. This is supported by our finding that FCM did not relate significantly to body condition or parasite load. Our results potentially highlight the physiological and behavioural adaptations of woylies to fire, which could be further explored in future studies.
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Groom, Christine. "Justification for continued conservation efforts following the delisting of a threatened species: a case study of the woylie, Bettongia penicillata ogilbyi (Marsupialia:Potoroidae)." Wildlife Research 37, no. 3 (2010): 183. http://dx.doi.org/10.1071/wr09129.

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Context. There are few cases where a species has been removed from a list of threatened species as a result of conservation efforts. One such example is the woylie (also known as the brush-tailed bettong), Bettongia penicillata ogilbyi, which was removed from state (Western Australian), national (Australian) and international lists in 1996, following the successful implementation of the species’ recovery plan. Since downgrading of its conservation status, the woylie has been considered conservation dependent. Conservation efforts continued in the form of toxic baiting to control the species’ principal predator, monitoring to identify trends in distribution and abundance, and translocation to help restore ecosystem function and further secure the conservation status of the species. Recent observations of a decline in abundance of the species have prompted a review of its conservation status. Aims. To assess the conservation status of the woylie in 2006 against IUCN criteria and to investigate the value of continued conservation efforts following the delisting of the species. Methods. Monitoring data were collated and parameters required to assess the conservation status of the woylie against IUCN criteria were investigated. The various processes associated with conserving the species, such as translocation and monitoring, were also assessed. Key results. The species underwent a rapid decline between 2001 and 2006, reducing the population by ~75% to an estimated 10 000 individuals. The decline has not been consistent across occurrences and of particular concern are the declines observed at Perup/Lake Muir, Dryandra and Batalling, which were previously considered amongst the largest and most stable occurrences. In 2006, the species qualified for listing as Endangered using IUCN criteria. The resources allocated to translocation and monitoring the delisted woylie have ultimately resulted in managers being in a much better position to understand and act when an unforeseeable population decline occurred. Conclusion. Conservation efforts and population monitoring of delisted species must continue at a level where changes in distribution or abundance, which are significant enough to support relisting, can be detected. Implications. Threatened species lists should not be the primary consideration in allocation of resources to conservation efforts.
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Pacioni, Carlo, Cheryl A. Johansen, Timothy J. Mahony, Mark A. O'Dea, Ian D. Robertson, Adrian F. Wayne, and Trevor Ellis. "A virological investigation into declining woylie populations." Australian Journal of Zoology 61, no. 6 (2013): 446. http://dx.doi.org/10.1071/zo13077.

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The woylie (Bettongia penicillata ogilbyi) is a critically endangered small Australian marsupial that is in a state of accelerated population decline for reasons that are currently unknown. The aim of the present study was to elucidate the involvement of several viral pathogens through strategic serological testing of several wild woylie populations. Testing for antibodies against the Wallal and Warrego serogroup of orbiviruses, Macropod herpesvirus 1 and Encephalomyocarditis virus in woylie sera was undertaken through virus neutralisation tests. Moreover, testing for antibodies against the the alphaviruses Ross River virus and Barmah Forest virus and the flaviviruses Kunjin virus and Murray Valley encephalitis virus was undertaken through virus neutralisation tests and ELISA mainly because of the interest in the epidemiology of these important zoonoses as it was considered unlikely to be the cause of the decline. Between 15 and 86 samples were tested for each of the four sites in south-western Australia (Balban, Keninup, Warrup and Karakamia). Results indicated no exposure to any of the viral pathogens investigated, indicating that all populations are currently naïve and may be at risk if these pathogens were to be introduced.
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Dissertations / Theses on the topic "Woylie"

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Nelson, Lyn, and n/a. "Behavioural ecology of the Woylie, Bettongia penicillata Gray, 1837, on Island A, Venus Bay, South Australia." University of Canberra. Applied Science, 1989. http://erl.canberra.edu.au./public/adt-AUC20060824.103148.

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A study of the behavioural ecology of the woylie (Bettongia penicillata) was conducted between November 1986 and September 1987 on a population that had been introduced to Island A, Venus Bay in South Australia. The primary aim of the research was to establish the reasons for the success of this population of approximately 20 individuals which survives in an environment which is considerably different from the pockets of forest and woodland habitats comprising the present range of this species in Western Australia. This knowledge will assist wildlife authorities to identify suitable reintroduction sites within the former mainland range of B. penicillata. Scat analysis revealed that woylies on Island A consumed a catholic diet of dicotyledon leaf material, seasonal fruits and berries, and invertebrates. Endomycorrhizal fungal spores were common in scats during spring and are possibly derived from the gut of Scarab beetle larvae that were present in the scats at this time. Fungi are an insignificant dietary component of woylies at Venus Bay. The home ranges of woylies on Island A overlapped considerably and were significantly smaller than the "feeding" areas recorded for Western Australian conspecifics. Separate "feeding" and "nest" areas could not be identified on Island A as refuges were dispersed throughout the home range and were at a density of approximately three times that reported for Western Australian woylies. The refuge sites used by woylies on Island A were relatively simple constructions and contrasted with the more complex double-layered structures described for mainland woylies. Refuge sites on Island A were generally located beneath dense bushes. They provided little protection from prevailing temperature and relative humidity but did provide cover and ameliorate the effects of insolation. Refuges were exclusive to individuals. Males maintained a greater degree of spatial separation from one another during refuge occupation than they did from females, or females from each other. No significant difference between male and female body masses was detected, while the mean body mass recorded in December was significantly higher than at other times. The woylies at Venus Bay had significantly lower masses than those reported for a population of woylies at Tuttanning in Western Australia. The limited genetic base of the founding population and competition for food among this high density population are the most likely reasons for the lower masses of woylies on Island A. This study demonstrates that woylies can be successfully introduced into a wild, modified environment if their basic habitat requirements of suitable cover and diet are met. A broad diet, the abundance of suitable food species and adequate refuge sites within a small area, together with the absence of predators and fire, have all contributed to the success of the woylie population introduced to Island A. Active management is required to monitor and manipulate such small populations to ensure that genetic viability is maintained and the long term survival of the species is secured. Management: Recommendations 1. Monitor the population dynamics and genetic profiles of wild woylie populations in Western Australia. 2. Monitor the genetic profiles of woylies on Island A and other introduced populations. 3. Identify and acquire habitats similar to, and within, those of B. penicillata's former range, remove stock and exotic herbivores, implement and maintain predator control measures, and foster the growth of food species suitable for woylies. 4. Conduct research at proposed introduction sites to establish the fire regimes that would maintain adequate food and cover for woylies. 5. Introduce fresh genetic stock from wild Western Australian populations into the existing small populations in South Australia and simultaneously cull adults from the receiving population. 6. Maintain management practices to protect relic populations in Western Australia and newly established populations at introduction sites.
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Wajzer, Marek Roman. "The geology and tectonics of the Woyla Group, Natal Area, North Sumatra." Thesis, Royal Holloway, University of London, 1986. http://repository.royalholloway.ac.uk/items/452e1d33-ee8d-4678-997c-bc85eac06a27/1/.

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The Batang Natal River flows across the Western Barisan Mountains of North Sumatra, exposing a section through the Woyla Group, a major unit of Sumatran island arc basement. Detailed field mapping of the section, followed up by thin section petrology, structural analysis and radiometric dating, was undertaken in order to investigate the geology, structure, origin and tectonic evolution of the Woyla Group. The Woyla Group outcropping in the section is divided into eighteen lithotectonic units, each with distinctive lithological characteristics, including basalts, volcanogenic turbidites and debris flows, and esites, spilites, chert-limest?ne breccias, non-marine volcanogenic sediments, quartz-mica schists, metaturbidites, megabreccias, serpentinite, diorite and massive limestones. Most units are deformed to varying degrees of intensity by tight to isoclinal 'F' folding with an associated 'S1 foliation. A later phase of open 'F2' folding deforms the 'S' foliation, as well as other layered units unaffected by 'D'. All the units are bounded and internally disrupted by strike-slip faults, commonly of NW/SE or WNW/ESE trend. Previous models interpreted the Woyla Group as the remnants of a closed marginal basin. The new model proposed here suggests the Woyla Group is a Mesozoic accretionary complex, built up of pelagic and terrigenous sediments, together with fragments of island arc and oceanic material, that were accreted against the Mesozoic Sumatran continental margin. The complex later subsided, to form part of the basement of the Tertiary forearc basin. The Sumatran Fault System, initiated in the late Mesozoic, or possibly earlier, as a consequence of oblique subduction; transected the Sumatran forearc and the magmatic arc. It resulted in major disruption, translation and reshuffling of fault slivers, thereby assembling the allochthonous and parautochthonous terranes now seen in the Woyla Group. The Woyla Group was subaerially exposed by the late Miocene-early Pliocene uplift of the Barisan Mountains.
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Gröning, Pierre-Michael [Verfasser], and Wichard [Akademischer Betreuer] Woyke. "Die politischen und wirtschaftlichen Beziehungen zwischen der Europäischen Union und Indien : strategische Partnerschaft oder freundliches Desinteresse? / Pierre-Michael Gröning. Betreuer: Wichard Woyke." Münster : Universitäts- und Landesbibliothek der Westfälischen Wilhelms-Universität, 2012. http://d-nb.info/102702159X/34.

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Grieb, Anissa Verfasser], Bernhard [Akademischer Betreuer] Fuchs, Bernhard [Gutachter] Fuchs, and Tanja [Gutachter] [Woyke. "Study of diversity and function of the marine key group Vis6 with cultivation-independent methods / Anissa Grieb ; Gutachter: Bernhard Fuchs, Tanja Woyke ; Betreuer: Bernhard Fuchs." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/1203298951/34.

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Woyke, Andreas [Verfasser]. "Die Entwicklung einer aprozessualen Welt- und Naturdeutung in der abendländischen Geistesgeschichte und ihre Bedeutung für die "Ausblendung des Prozessualen" in Chemie und Chemieunterricht / vorgelegt von: Andreas Woyke." 2004. http://d-nb.info/973536500/34.

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Books on the topic "Woylie"

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Saar, Xaalima. Sang bi: Woyi diiné. [Sénégal: s.n., 1999.

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Dzieje Rodu Rozyckich Herbu Rola Z Woynia. Oficyna Wydawnicza "Osgraf", 2003.

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Filar, Władysław. Woyn 1939-1944: Eksterminacja Czy Walki Polsko-Ukrainskie: Studium Historyczno-Wojskowe Zmagan Na Woyniu W Obronie Polskosci, Wiary I. Adam Marszalek, 2003.

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Karta, O. Srodek. Polska-Ukraina, Trudna Odpowiedz: Dokumentacja Spotkan Historykow (1994-2001): Kronika Wydarzen Na Woyniu I W Galicji Wschodniej (1939-1945). Naczelna Dyrekcja Archiwow Panstwowych, 2003.

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Karta, O. Srodek. Polska-Ukraina, Trudna Odpowiedz: Dokumentacja Spotkan Historykow (1994-2001): Kronika Wydarzen Na Woyniu I W Galicji Wschodniej (1939-1945). Naczelna Dyrekcja Archiwow Panstwowych, 2003.

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Yue, Meiti. Woyi ge gu dan di nu xiao sheng (Zi shu cong shu). Wen hui chu ban she, 1994.

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Book chapters on the topic "Woylie"

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Zogry, Michael J. "Woye ! (Foul!): Theory and the Meaning of Anetso." In Anetso, the Cherokee Ball Game, 185–226. University of North Carolina Press, 2010. http://dx.doi.org/10.5149/9780807898208_zogry.9.

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