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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 2006 (1 to 6); 2007 (, 1 to 8); 2008 (, 1 to 8); 2009 (, 1 to 8); 2010 (, 1 to 12); 2011 (, 1 to 12); 2012 (, 1 to 12); 2013 (, 1 to 12); 2014 (, 1 to 12); 2015 (, 1 to 13); 2016 (, 1 to 13); 2017 (, 1 to 13); 2018 (, 1 to 13); 2019 (, 1 to 13); 2020 (, 1 to 13); 2021 (, 1 to 13); 2022 (, 1 to 13); 2023 (, 1 to 13); 2024 (, 1 to 13)
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LOCKSS Archive
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In Progress
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2026-02-09
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2012
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LOCKSS Archive
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Preserved
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2026-02-09
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2013 to 2019
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 2006(1-6), 2007: 2007(1-8), 2008: 2008(1-8), 2009: 2009(1-8), 2010: 2010(1-12), 2011: 2011(1-12), 2012: 2012(1-6, 8-12), 2013: 2013(1-3, 5, 7-12), 2014: 2014(1-5, 7-8, 10-12), 2015/2016: 2015(1-13), 2016: 2016(1-13), 2017: 2017(1-13), 2018: 2018(1-13), 2019/2020: 2019(1-13), 2020: 2020(1-13), 2021: 2021(1-13), 2022: 2022(1-13), 2023: 2023(1-13), 2024: 2024(1-5, 8-13), 2025: 2025(1-9)
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CLOCKSS Archive
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Preserved
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2026-02-09
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2006 to 2025
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 21 (1, 5 to 9, 11, 12); 22 (1 to 9, 11 to 13); 26 (1 to 6); 27 (1 to 8); 28 (1 to 8); 29 (1 to 8); 211 (1 to 9, 11, 12); 212 (1 to 9, 11, 12); 213 (1 to 9, 11, 12); 214 (1 to 9, 11, 12); 215 (1 to 9, 11 to 13); 216 (1 to 9, 11 to 13); 217 (1 to 9, 11 to 13); 218 (1 to 9, 11 to 13); 219 (1 to 9, 11 to 13); 221 (1 to 9, 11 to 13); 222 (1 to 9, 11 to 13); 223 (1 to 7); 224 (1 to 5)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 21 (1, 5 to 9, 11, 12); 22 (1 to 9, 11 to 13); 26 (1 to 6); 27 (1 to 8); 28 (1 to 8); 29 (1 to 8); 211 (1 to 9, 11, 12); 212 (1 to 9, 11, 12); 213 (1 to 9, 11, 12); 214 (1 to 9, 11, 12); 215 (1 to 9, 11 to 13); 216 (1 to 9, 11 to 13); 217 (1 to 9, 11 to 13); 218 (1 to 9, 11 to 13); 219 (1 to 9, 11 to 13); 221 (1 to 9, 11 to 13); 222 (1 to 9, 11 to 13); 223 (1 to 7); 224 (1 to 5)
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Library of Congress
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Preserved
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2025-04-07
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2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 21 (1 to 9, 11, 12); 211 (1, 2)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 21 (1 to 9, 11, 12); 211 (1, 2)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 2006 (1-6); 2007 (1-8); 2008 (1-8); 2009 (1-8); 2010 (1-12); 2011 (1-12); 2012 (1-12); 2013 (1-12); 2014 (1-12); 2015 (1-8, 10-13); 2016 (1-13); 2017 (1-13); 2018 (1-13); 2019 (1-9)
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