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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 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1, 2-3, 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1, 2, 3-4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 3, 4-5, 6); 37 (5, 6); 38 (1 to 4, 5-6); 39 (1 to 6); 40 (1 to 3, 4-5, 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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13 to 20
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 44
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Portico
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Preserved
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2026-04-02
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Preserved : 1978/1979/1980: 1(1-4), 1980/1981: 2(1-4), 1981/1982/1983: 3(1-4), 1983: 4(1-4), 1984: 5(1-4), 1985: 6(1-4), 1986: 7(1-4), 1987: 8(1-4), 1988: 9(1-4), 1989: 10(1-4), 1990: 11(1-4), 1991: 12(1-4), 1992/1993: 13(1-4), 1993/1994: 14(1-4), 1994: 15(1-4), 1995/1996: 16(1-4), 1996/1997: 17(1-4), 1997/1998/1999: 18(1-4), 1999/2000: 19(1-4), 2000/2001: 20(1-4), 2001/2002/2003: 21(1-4), 2003: 22(1-4), 2004/2005: 23(1-4), 2005/2006: 24(1-4), 2006/2007: 25(1-4), 2007/2008: 26(1-6), 2008/2009: 27(1-6), 2009/2010: 28(1-6), 2011: 29(1-6), 2012: 30(1-6), 2013: 31(1-6), 2014: 32(1-6), 2015: 33(3-6), 2016: 34(1-6), 2017: 35(1-6), 2018: 36(1-6), 2019: 37(1-6), 2019/2020: 38(1-6), 2021: 39(1-6), 2022: 40(1-6), 2023: 41(1-6), 2024: 42(1-6), 2025: 43(1-6), 2025/2026: 44(1-3)
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LOCKSS Archive
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In Progress
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2026-04-06
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30, 37
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LOCKSS Archive
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Preserved
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2026-04-06
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31 to 36
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Library of Congress
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Preserved
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2025-04-07
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36 (2 to 4-5, 6); 37 (1 to 6); 38 (1 to 5-6); 39 (1 to 6); 40 (1 to 4-5, 6); 41 (1 to 6); 42 (1 to 5)
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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 to 4); 3 (1 to 6); 4 (1 to 3, 4-5, 6); 17 (2 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 3); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 3, 4-5, 6); 37 (1 to 6); 38 (1 to 4, 5-6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6)
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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 4); 3 (1 to 6); 4 (1 to 3, 4-5, 6); 17 (2 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 3); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 3, 4-5, 6); 37 (1 to 6); 38 (1 to 4, 5-6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6)
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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 : 16 (4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 22 (1, 2, 3-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-3, 4-5, 6); 37 (1-6)
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