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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1); 2; 3 (2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1, 2); 12 (1); 13 (2); 14 (1, 2); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1, 2); 21 (1, 2-3); 22 (1, 2-3); 23 (1 to 3); 24 (1-2, 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1-2, 3); 38 (1 to 3); 39 (1-2, 3); 40 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3)
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CLOCKSS Archive
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Preserved
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2026-05-04
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1 to 23, 25 to 47
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Portico
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Preserved
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2026-05-07
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Preserved : 1979: 1(1), 1980: 2(1), 1981: 3(1-2), 1982: 4(1-2), 1983: 5(1-2), 1984: 6(1-2), 1985: 7(1-2), 1986: 8(1-2), 1987: 9(1-2), 1988: 10(1-2), 1989: 11(1-2), 1990: 12(1), 1991: 13(1-2), 1992: 14(1-2), 1993: 15(1-2), 1994: 16(1-2), 1995: 17(1-2), 1996: 18(1-2), 1997: 19(1-2), 1998: 20(1-2), 1999: 21(1-3), 2000: 22(1-3), 2001: 23(1-3), 2002: 24(1-3), 2004: 25(1-3), 2005: 26(1-3), 2006: 27(1-3), 2007: 28(1-3), 2008: 29(1-3), 2009: 30(1-3), 2010: 31(1-3), 2011: 32(1-3), 2012: 33(1-3), 2013: 34(1, 3), 2014: 35(1-3), 2015: 36(1-3), 2016: 37(1-3), 2017: 38(1-3), 2018: 39(1-3), 2019: 40(1-3), 2019/2020: 41(1-3), 2021: 42(1-3), 2022: 43(1-3), 2023: 44(1-3), 2024: 45(1-2), 2025: 46(1-3), 2026: 47(1)
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LOCKSS Archive
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In Progress
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2026-05-04
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33, 40
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LOCKSS Archive
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Preserved
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2026-05-04
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34 to 39
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Library of Congress
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Preserved
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2025-04-07
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39 (1-2, 3); 40 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1, 2)
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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 : 2 (1, 2); 3 (1 to 3); 4 (1 to 3); 19 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1 to 3); 24 (1, 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1-2, 3); 38 (1 to 3); 39 (1-2, 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3)
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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 : 2 (1, 2); 3 (1 to 3); 4 (1 to 3); 19 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1 to 3); 24 (1, 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1-2, 3); 38 (1 to 3); 39 (1-2, 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3)
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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 : 21 (1, 2); 22 (1, 2); 23 (1-3); 24 (1, 3); 25 (1-3); 26 (1-3); 27 (2, 3); 28 (1-3); 29 (1-3); 30 (1-3); 31 (1-3); 32 (1-3); 33 (1-3); 34 (1-3); 35 (1-3); 36 (1-3); 37 (1-2, 3); 38 (1-3); 39 (1-2, 3); 40 (1, 2)
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