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Artículos de revistas sobre el tema "Preservation"

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Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 7 de julio de 2024

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1

Sharif, ZIM, FA Mustapha, J. Jai, N. Mohd Yusof y NAM Zaki. "Review on methods for preservation and natural preservatives for extending the food longevity". Chemical Engineering Research Bulletin 19 (10 de septiembre de 2017): 145. http://dx.doi.org/10.3329/cerb.v19i0.33809.

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<p>Chemical, enzymatic or microbial activities from the surrounding environment and the food itself can cause spoilage to food products. In the meantime, the recent surge in world population, calls forfood products to be stored and delivered from one place to another place. During delivery, food products will start to deteriorate, losetheir appearance and decrease in nutritional values. Thus, the presence of food preservation methods such as heating, pickling, edible coating, drying, freezing and high-pressure processing can solve this problem by extending the food products‟ shelf life, stabilize their quality, maintaining their appearance and their taste. There are two categories of food preservations, the modern technology preservation method and the conventional preservation method. In the meantime, conventional food preservations usually use natural food preservatives. Meanwhile, the use of the synthetic preservative such as sulphites, benzoates, sorbates etc. for food preservation can cause certain health problems. In this light, replacing these synthetic preservatives with natural preservatives such as salt, vinegar, honey, etc. are much safer for human and environment. Furthermore, natural preservatives are easy to obtain since the sources are from plant, animal and microbes origin. This review paper focuses on preservation methodsand the natural preservatives that are suitable to be used for food preservation.</p><p>Chemical Engineering Research Bulletin 19(2017) 145-153</p>

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2

Li, Yu Feng, Shi Fu Zhu y Xue Jun Zhu. "Study on the Application of Modified Chitosan in Cherry Preservation". Advanced Materials Research 479-481 (febrero de 2012): 124–28. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.124.

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To obtain a good Cherry preservative, the author prepared acetic acid Chitosan and metal ion complexes with solid-liquid reaction. Besides, the Cherry preservative was prepared by modified Chitosan materials. It was obtained that the optimal concentration of chitosen acetate for fresh cherries is 20g/l by studying effect of different concentrations of preservative on the storage of Cherry and its preservation time was 24 days. It also found that it owned better preservation effect with adding metal ion and Zn compound preservative had the best preservation performance among all experimental ion compound preservation. The experiment results showed that the preservative which prepared by Chitosan had excellence properties of extending Cherries storage periods、lowing the loss of Cherry fruit during storage、slowing the forming of Cherry soluble solids and the decreasing of titratable acid and vitamine C, but also reducing Cherry metabolism.

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3

Tan, Zhi Ming, Hao Chen, Ping Xiu Shi, Long Liu, Zhi Wen Chen, Piao Yan Xu, Tao Liu, Yong Lin Hu, Qiang Song Wang y De Juan Huang. "Effects of Four Antistaling Agents on Preservation of Nan Feng Tangerines". Advanced Materials Research 1044-1045 (octubre de 2014): 176–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.176.

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The Nan Feng Tangerine is used to study the preservation effects of the chemical preservative, 1% chitosan, 1% carboxymethyl with 1% chitosan, and 1% carboxymethyl with 50ppm Silver Nano composite. The results show that the tangerine weight losses after preservative treatments are lower than the loss of the control group, and the total citrus-sugar content, citrus-Vitamin C content and total citrus-acid content are higher than those of the control group. In conclusion, the Silver Nano composite has the best preservative effect on the Nan Feng citrus, and the effect using film preservation is better than that using the chemical preservation.

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4

Huang, Dong-Qi, Ye Wang, Qian Wu, Jin-Rong Chen, Zi-Yue Li, Nian-Si Fan y Ren-Cun Jin. "Anammox sludge preservation: Preservative agents, temperature and substrate". Journal of Environmental Management 311 (junio de 2022): 114860. http://dx.doi.org/10.1016/j.jenvman.2022.114860.

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5

Nazaruk, M. "The analysis of nature preservation scientific researches on geographical faculty Lvov national university at the end of the XX–beginning of the XXI c". Visnyk of the Lviv University. Series Geography, n.º 45 (20 de mayo de 2014): 39–48. http://dx.doi.org/10.30970/vgg.2014.45.1149.

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The main aspects and directions of preservation school on the geographical faculty during the latest 20 years were considered. The subject of nature preservation researches were characterized. It was noticed the main aspects of activity of scientists of geographical faculty of Lviv National University. The publications of nature preservation literature were analyzed, the main directions of dissertation researches on the faculty were noticed. Key words: nature preservations scientific researches, department of geography Ivan Franko National University of Lviv.

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6

Parikh, Arjun. "The Preservation of the Separate Spheres Doctrine in Congress and the Federal Courts". Michigan Journal of Gender & Law, n.º 30.1 (2023): 107. http://dx.doi.org/10.36641/mjgl.30.1.preservation.

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In Bradwell v. State, an 1872 decision upholding an Illinois law prohibiting women from practicing law, the United States Supreme Court reasoned that the law was justified because women belonged in the “domestic sphere.” While today’s sex-based workplace exclusions are not as explicit as they once were, women still face barriers to remaining in the workforce and advancing in the workplace despite the existence of major federal legislation in the areas of pregnancy discrimination and family leave policy. Congress passed the Pregnancy Discrimination Act (PDA) in 1978 to stop pregnancy discrimination, but the PDA has not come close to eliminating pregnancy discrimination. Similarly, despite Congress’s passing of the Family and Medical Leave Act (FMLA) in 1993, ineffective family leave policy continues to hinder women’s ability to balance work and their disproportionate family caregiving obligations. After tracing the development of sex-based workplace exclusions from the 1870s through the 1970s, this Note argues that the PDA and FMLA prohibited explicit sex-based workplace exclusions while preserving other forms of sex-based workplace exclusions. This Note then analyzes proposed work-family legislation and argues that policies aimed at eliminating sex-based workplace exclusions must account for the specific experiences of women while promoting anti-stereotyping principles.

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7

Power, Rose-Lee. "Preservation". ANZTLA EJournal, n.º 9 (18 de diciembre de 2013): 69–94. http://dx.doi.org/10.31046/anztla.vi9.235.

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8

Hill-Bjerke, Carolyn. "Preservation". Anthropology Humanism 29, n.º 2 (diciembre de 2004): 190–91. http://dx.doi.org/10.1525/ahu.2004.29.2.190.

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9

Koets, J. "Preservation". Minnesota review 2014, n.º 83 (1 de enero de 2014): 2. http://dx.doi.org/10.1215/00265667-2781404.

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10

Cole, Norma. "Preservation". Appalachian Heritage 15, n.º 4 (1987): 6. http://dx.doi.org/10.1353/aph.1987.0063.

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11

Bergland, Kristi, Enrique Caboverde, Alice Carli, Christina Gibson y Stephanie Sussmeier. "Preservation". Notes 80, n.º 1 (septiembre de 2023): 22–28. http://dx.doi.org/10.1353/not.2023.a905311.

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12

Battula, Narendra R. y Kenneth A. Andreoni. "Oxygenated Preservation Solutions for Organ Preservation". Transplantation 103, n.º 2 (febrero de 2019): 233–34. http://dx.doi.org/10.1097/tp.0000000000002531.

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13

McCoy, Victoria E., Carmen Soriano y Sarah E. Gabbott. "A review of preservational variation of fossil inclusions in amber of different chemical groups". Earth and Environmental Science Transactions of the Royal Society of Edinburgh 107, n.º 2-3 (junio de 2016): 203–11. http://dx.doi.org/10.1017/s1755691017000391.

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ABSTRACTFossils in amber are a particularly important and unique palaeobiological resource. Amber is best known for preserving exceptionally life-like fossils, including microscopic anatomical details, but this fidelity of preservation is an end-member of a wide spectrum of preservation quality. Many amber sites only preserve cuticle or hollow moulds, and most amber sites have no fossils at all. The taphonomic processes that control this range in preservation are essentially unknown. Here, we review the relationship between amber groups and fossil preservation, based on published data, to determine whether there is a correlation between resin type and aspects of preservation quality. We found that ambers of different chemistry demonstrated statistically significant differences in the preservational quality and the propensity of a site to contain fossils. This indicates that resin chemistry does influence preservational variation; however, there is also evidence that resin chemistry alone cannot explain all the variation. To effectively assess the impact of this (and other) variables on fossilisation in amber, and therefore biases in the amber fossil record, a more comprehensive sampling of bioinclusions in amber, coupled with rigorous taphonomic experimentation, is required.

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14

Huelsenbeck, John P. y Bruce Rannala. "Maximum likelihood estimation of phylogeny using stratigraphic data". Paleobiology 23, n.º 2 (1997): 174–80. http://dx.doi.org/10.1017/s0094837300016778.

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The stratigraphic distribution of fossil species contains potential information about phylogeny because some phylogenetic trees are more consistent with the distribution of fossils in the rock record than others. A maximum likelihood estimator of phylogeny is derived using an explicit mathematical model of fossil preservation. The method assumes that fossil preservations within lineages follow an independent Poisson process, but can be extended to include other preservation models. The performance of the method was examined using Monte Carlo simulation. The performance of the maximum likelihood estimator of topology increases with an increase in the preservation rate. The method is biased, like other methods of phylogeny estimation, when the rate of fossil preservation is low; estimated trees tend to be more asymmetrical than the true tree. The method appears to perform well as a tree rooting criterion even when preservation rates are low. We suggest several possible extensions of the method to address other questions about the nature of fossil preservation and the process of speciation and extinction over time and space.

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15

Saito, Mitsuru, David A. Thomas, Robert S. Payne y Glen J. Thurgood. "Utah’s Legal Framework for Corridor Preservation Activities". Transportation Research Record: Journal of the Transportation Research Board 1706, n.º 1 (enero de 2000): 29–37. http://dx.doi.org/10.3141/1706-04.

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Tools and techniques for corridor preservation strategies are categorized into two groups: interim protection measures and preservation measures. Interim protection measures serve to hold land out of development until it can be purchased; preservation measures definitively ensure that right-of-way will be available when needed for a transportation facility. This almost invariably involves full transfer of title of others’ rights to a public transportation or other government entity. These measures must be implemented within the limits of the statutes that exist in the state where a public agency is located. Whether state officials choose to establish a long-range highway corridor preservation program by acquisition or by police power regulation, that program will be subject to several statutes that generally constrain all such activities. A review of legislation in Utah and other U.S. states that specifically addresses corridor preservation was conducted. It was found that about 20 states had some statutes relating to corridor preservation. In Utah and in other states, however, few state legislative provisions governing long-range preservation activities are orderly or systematic. A summary of findings on legal issues of corridor preservation in Utah and possible ways for enabling long-term corridor preservations so that states that face similar problems can glean insights from Utah’s experience is presented. Also presented is a model legislation that was developed based on study findings in an effort to raise the issue of legal aspects of corridor preservation.

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16

Lembach Jahnsen, Hanns, Hynek Mergental, M. Thamara P. R. Perera y Darius F. Mirza. "Ex-situ liver preservation with machine preservation". Current Opinion in Organ Transplantation 26, n.º 2 (16 de febrero de 2021): 121–32. http://dx.doi.org/10.1097/mot.0000000000000864.

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17

Jääskeläinen, Anssi y Mirja Loponen. "Preservation is no Preservation without Proper Education". Archiving Conference 10, n.º 1 (1 de enero de 2013): 61–65. http://dx.doi.org/10.2352/issn.2168-3204.2013.10.1.art00014.

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18

Giguère, Louis A., J. F. St-Pierre, B. Bernier, A. Vézina y j. G. Rondeau. "Can We Estimate the True Weight of Zooplankton Samples after Chemical Preservation?" Canadian Journal of Fisheries and Aquatic Sciences 46, n.º 3 (1 de marzo de 1989): 522–27. http://dx.doi.org/10.1139/f89-070.

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Zooplankton are collected and sorted into two size fractions from which samples are randomly alloted to a battery of commonly used preservation techniques. We determine dry weight, ash content, and caloric content. We compute organic and inorganic losses of the samples to examine potential causes of variation in dry weight estimates. Treatments are: no preservation, preservation with one of three chemicals (75% ethanol, 5% or 10% buffered formaldehyde), preservation for 1 or 66 wk, and oven- or freeze-drying. Overall dry weight losses are independent of preservation methods. Chemical preservation reduces dry weight by 37 to 43%. Organic and inorganic losses range from 25 to 33% and 73 to 82%, respectively. Because inorganic losses are large, chemical preservation increases the caloric content of samples by 13 – 27%. Dry weight losses are somewhat size-dependent (37 versus 43% for the large and small size fraction respectively, after 66 wk of preservation). A regression of percent dry weight losses on body length (in millimetres) is obtained for our data, and published reports where formaldehyde is used as a preservative. It is: In[dry weight loss] = 4.149 − 0.576 length0.333. This relationship can be used to adjust the weight of zooplankton samples which have been preserved chemically. A survey of studies published in 1983 indicates that most authors did not adjust for dry weight losses due to preservation.

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19

Sperling, Erik A., Uwe Balthasar y Christian B. Skovsted. "On the edge of exceptional preservation: insights into the role of redox state in Burgess Shale-type taphonomic windows from the Mural Formation, Alberta, Canada". Emerging Topics in Life Sciences 2, n.º 2 (26 de julio de 2018): 311–23. http://dx.doi.org/10.1042/etls20170163.

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Animals originated in the Neoproterozoic and ‘exploded’ into the fossil record in the Cambrian. The Cambrian also represents a high point in the animal fossil record for the preservation of soft tissues that are normally degraded. Specifically, fossils from Burgess Shale-type (BST) preservational windows give paleontologists an unparalleled view into early animal evolution. Why this time interval hosts such exceptional preservation, and why this preservational window declines in the early Paleozoic, have been long-standing questions. Anoxic conditions have been hypothesized to play a role in BST preservation, but recent geochemical investigations of these deposits have reached contradictory results with respect to the redox state of overlying bottom waters. Here, we report a multi-proxy geochemical study of the Lower Cambrian Mural Formation, Alberta, Canada. At the type section, the Mural Formation preserves rare recalcitrant organic tissues in shales that were deposited near storm wave base (a Tier 3 deposit; the worst level of soft-tissue preservation). The geochemical signature of this section shows little to no evidence of anoxic conditions, in contrast with published multi-proxy studies of more celebrated Tier 1 and 2 deposits. These data help confirm that ‘decay-limited’ BST biotas were deposited in more oxygenated conditions, and support a role for anoxic conditions in BST preservation. Finally, we discuss the role of iron reduction in BST preservation, including the formation of iron-rich clays and inducement of sealing seafloor carbonate cements. As oceans and sediment columns became more oxygenated and more sulfidic through the early Paleozoic, these geochemical changes may have helped close the BST taphonomic window.

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20

Kanshi, Shivanand, Ravindra Kumar, M. P. Singh, M. P. Sinha y S. K. Singh. "Effect of diluters, breeds and storage period on boar semen characteristics". Indian Journal of Animal Sciences 82, n.º 8 (14 de agosto de 2012): 826–29. http://dx.doi.org/10.56093/ijans.v82i8.23000.

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The study was conducted on 54 semen samples obtained from 9 boars comprising 3 each of Large White Yorkshire, Tamworth and T & D (cross of Tamworth and Desi) by split sample technique to study the effect of different dilutors, genetic groups and hours of preservation on spermatozoa characteristics. The dilutors used were Kiev, Modena and lactose egg yolk (LEY). The sperm motility % was significantly highest in lactose egg yolk dilutor at all the hours of preservations. Irrespective of dilutors, the sperm motility% was significantly highest in T & D boars. Live sperm count was significantly highest in lactose egg yolk dilutor than Kiev and Modena during the hours of preservation in all the boar breeds. The difference in head abnormality % was nonsignificant in all the breeds and dilutors at all the hours of preservation except at 96 h. Highly significant effect of both hours of preservation and dilutors on the incidence of tail abnormality was noted during the study. The % of tail abnormality revealed an increasing trend with increase in the duration of preservation. On dilutor wise comparison, it indicated lower incidence of tail abnormality with lactose egg yolk dilutor at all hours of preservation. Therefore, it may be concluded that LEY diluter can be successfully used for preservation of boar spermatozoa at 15°C in a BOD incubator up to 96 h.

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21

Kastellec, Mike. "Practical Limits to the Scope of Digital Preservation". Information Technology and Libraries 31, n.º 2 (12 de junio de 2012): 63. http://dx.doi.org/10.6017/ital.v31i2.2167.

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<p>This paper examines factors that limit the ability of institutions to digitally preserve the cultural heritage of the modern era. The author takes a wide-ranging approach to shed light on limitations to the scope of digital preservation. The author finds that technological limitations to digital preservation have been addressed but still exist, and that non-technical aspects—access, selection, law, and finances—move into the foreground as technological limitations recede. The author proposes a nested model of constraints to the scope of digital preservation and concludes that costs are digital preservation’s most pervasive limitation.</p>

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22

Pagani, O. "Fertility preservation". Breast 56 (abril de 2021): S12. http://dx.doi.org/10.1016/s0960-9776(21)00078-3.

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23

Jensen, Jani R., Dean E. Morbeck y Charles C. Coddington. "Fertility Preservation". Mayo Clinic Proceedings 86, n.º 1 (enero de 2011): 45–49. http://dx.doi.org/10.4065/mcp.2010.0564.

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24

Sivertsvik, Morten. "Seafood Preservation". Journal of Aquatic Food Product Technology 30, n.º 3 (16 de marzo de 2021): 247. http://dx.doi.org/10.1080/10498850.2021.1903224.

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25

Burge, Tyler. "Content Preservation". Philosophical Review 102, n.º 4 (octubre de 1993): 457. http://dx.doi.org/10.2307/2185680.

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26

Smith, Kit. "Preservation issues". ANZTLA EJournal, n.º 38 (13 de mayo de 2019): 18–26. http://dx.doi.org/10.31046/anztla.v0i38.1419.

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27

Sadiku, Matthew N. O., Adebowale E. Shadare y Sarhan M. Musa. "Digital Preservation". International Journal of Advanced Research in Computer Science and Software Engineering 7, n.º 4 (30 de abril de 2017): 5–6. http://dx.doi.org/10.23956/ijarcsse/v7i4/01408.

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28

Troy, Maria. "Video Preservation". Afterimage 24, n.º 2 (septiembre de 1996): 4–5. http://dx.doi.org/10.1525/aft.1996.24.2.4.

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29

Kellner, Jakob y Saharon Shelah. "Preserving preservation". Journal of Symbolic Logic 70, n.º 3 (septiembre de 2005): 914–45. http://dx.doi.org/10.2178/jsl/1122038920.

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AbstractWe prove that the property “P doesn't make the old reals Lebesgue null” is preserved under countable support iterations of proper forcings, under the additional assumption that the forcings are nep (a generalization of Suslin proper) in an absolute way. We also give some results for general Suslin ccc ideals.

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30

Mollenhauer, Erin. "Practical Preservation". ANZTLA EJournal, n.º 27 (31 de octubre de 2021): 17–21. http://dx.doi.org/10.31046/anztla.i27.3026.

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31

Hedberg, Jane. "Preservation News". College & Research Libraries News 62, n.º 7 (1 de julio de 2001): 737. http://dx.doi.org/10.5860/crln.62.7.737.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 62, n.º 8 (1 de septiembre de 2001): 835–38. http://dx.doi.org/10.5860/crln.62.8.835.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 62, n.º 9 (1 de octubre de 2001): 935. http://dx.doi.org/10.5860/crln.62.9.935.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 1 (6 de agosto de 2019): 43. http://dx.doi.org/10.5860/crln.63.1.43.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 10 (1 de noviembre de 2002): 737. http://dx.doi.org/10.5860/crln.63.10.737.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 11 (1 de diciembre de 2002): 825. http://dx.doi.org/10.5860/crln.63.11.825.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 2 (1 de febrero de 2002): 131. http://dx.doi.org/10.5860/crln.63.2.131.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 3 (1 de marzo de 2002): 215–21. http://dx.doi.org/10.5860/crln.63.3.215.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 4 (1 de abril de 2002): 296–301. http://dx.doi.org/10.5860/crln.63.4.296.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 5 (1 de mayo de 2002): 370–71. http://dx.doi.org/10.5860/crln.63.5.370.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 6 (1 de junio de 2002): 442–43. http://dx.doi.org/10.5860/crln.63.6.442.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 7 (1 de julio de 2002): 515. http://dx.doi.org/10.5860/crln.63.7.515.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 8 (1 de septiembre de 2002): 594–95. http://dx.doi.org/10.5860/crln.63.8.594.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 63, n.º 9 (1 de octubre de 2002): 670–71. http://dx.doi.org/10.5860/crln.63.9.670.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 64, n.º 1 (1 de enero de 2003): 40–45. http://dx.doi.org/10.5860/crln.64.1.40.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 64, n.º 10 (1 de noviembre de 2003): 677. http://dx.doi.org/10.5860/crln.64.10.677.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 64, n.º 11 (1 de diciembre de 2003): 759. http://dx.doi.org/10.5860/crln.64.11.759.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 64, n.º 2 (1 de febrero de 2003): 116–17. http://dx.doi.org/10.5860/crln.64.2.116.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 64, n.º 3 (6 de agosto de 2019): 200–201. http://dx.doi.org/10.5860/crln.64.3.200.

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Hedberg, Jane. "Preservation News". College & Research Libraries News 64, n.º 4 (1 de abril de 2003): 273. http://dx.doi.org/10.5860/crln.64.4.273.

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