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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 24 (1); 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1-2, 3); 56 (1 to 3)
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Portico
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Preserved
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2026-04-30
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Preserved : 1993: 24(1), 1994: 25(1), 1995: 26(1), 1996: 27(1), 1997: 28(1), 1998: 29(1), 1999: 30(1), 2000: 31(1), 2001: 32(1), 2002: 33(1), 2003: 34(1), 2004: 35(1-2), 2005: 36(1-2), 2006: 37(1-2), 2007: 38(1-2), 2008: 39(1-2), 2009: 40(1-2), 2010: 41(1-2), 2011: 42(1-2), 2012: 43(1-2), 2013: 44(1-3), 2014: 45(1-3), 2015: 46(1-3), 2016: 47(1-3), 2017: 48(1-3), 2018: 49(1-3), 2019: 50(1-3), 2020: 51(1-3), 2021: 52(1-3), 2022: 53(1-3), 2023: 54(1-3), 2024: 55(1-3), 2025: 56(1-3)
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Portico
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Preserved
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2026-04-30
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Preserved : 2002: 33(1), 2003: 34(1), 2004: 35(1-2), 2005: 36(1-2), 2006: 37(1-2)
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Portico
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Preserved
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2026-04-30
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Preserved : 2019: 50(1-3), 2020: 51(1-3), 2021: 52(1-3), 2022: 53(1-3), 2023: 54(1-3), 2024: 55(1-2), 2025: 56(1-2)
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LOCKSS Archive
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Preserved
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2026-04-27
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24 to 55
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CLOCKSS Archive
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Preserved
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2026-04-27
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24 to 56
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LOCKSS Archive
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In Progress
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2026-04-27
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56
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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 : 3; 4 (2); 5 (1 to 3); 28 (1); 29; 31; 32; 33; 34; 35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1-2)
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Library of Congress
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Preserved
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2025-04-07
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41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (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 : 22 (1); 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2)
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