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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2); 2 (1-2); 3 (2); 4 (1 to 3); 5 (1, 2-3); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1, 2); 12 (1, 2); 14 (1); 15 (2, 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 20 (1, 2); 21 (1 to 3); 22 (1 to 3); 23; 24 (1, 3); 25 (2, 3); 26 (2); 28 (3); 29 (1 to 3); 30 (1 to 3); 31 (1, 3); 32 (1 to 3); 33 (2, 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1986: 1(1-2), 1987: 2(1-2), 1988: 3(1-2), 1989: 4(1-3), 1990: 5(1-3), 1991: 6(1-2), 1992: 7(1-2), 1993: 8(1-2), 1994: 9(1-2), 1995: 10(1-2), 1996: 11(1-2), 1997: 12(1-2), 1998: 13(1-3), 1999: 14(1-3), 2000: 15(1-3), 2001: 16(1-3), 2002: 17(1-3), 2003: 18(1-3), 2004: 19(1-3), 2005: 20(1-3), 2006: 21(1-3), 2007: 22(1-3), 2008: 23(1-3), 2009: 24(1-3), 2010: 25(1-3), 2011: 26(1-3), 2012: 27(1-3), 2013: 28(1-3), 2014: 29(1-3), 2015: 30(1-3), 2016: 31(1-3), 2017: 32(1-3), 2018: 33(1-3), 2019: 34(1-3), 2020: 35(1-3), 2021: 36(1-3), 2022: 37(1-3), 2023: 38(1-3), 2024: 39(1-3), 2025: 40(1-3), 2026: 41(1)
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CLOCKSS Archive
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In Progress
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2026-03-30
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1 to 41
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LOCKSS Archive
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In Progress
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2026-03-30
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1 to 17, 40, 41
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LOCKSS Archive
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Preserved
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2026-03-30
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18 to 39
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LOCKSS Archive
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Preserved
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2026-03-30
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1 to 38
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CLOCKSS Archive
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Preserved
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2026-03-30
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23 to 32
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Portico
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Preserved
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2026-04-02
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Preserved : 1986: 1(1-2), 1987: 2(1-2), 1988: 3(1-2), 1989: 4(1-3), 1990: 5(1-3), 1991: 6(1-2), 1992: 7(1-2), 1993: 8(1-2), 1994: 9(1-2), 1995: 10(1-2), 1996: 11(1-2), 1997: 12(1-2), 1998: 13(1-3), 1999: 14(1-3), 2000: 15(1-3), 2001: 16(1-3), 2002: 17(1-3), 2003: 18(1-3), 2004: 19(1-3), 2005: 20(1-3), 2006: 21(1-3), 2007: 22(1-3), 2008: 23(1-3), 2009: 24(1-3), 2010: 25(1-3), 2011: 26(1-3), 2012: 27(1-3), 2013: 28(1-3), 2014: 29(1-3), 2015: 30(1-3), 2016: 31(1-3), 2017: 32(1-3), 2018: 33(1-3), 2019: 34(1-3), 2020: 35(1-3), 2021: 36(1-3), 2022: 37(1-3), 2023: 38(1-3)
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CLOCKSS Archive
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Preserved
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2026-03-30
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1 to 23, 33 to 38
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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 to 3); 3 (1 to 3); 12 (1, 2); 13 (1 to 3); 14 (1, 2-3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 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 to 3); 38 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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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 to 3); 38 (1 to 3); 39 (1, 2)
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