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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 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (1 to 8); 29 (1 to 8); 30 (1 to 8); 31 (1 to 10); 32 (1 to 10); 33 (1 to 10); 34 (1 to 10); 35 (1 to 10); 36 (1 to 10); 37 (1 to 10); 38 (1 to 10); 39 (1 to 10); 40 (1 to 7, 9, 10); 41 (1 to 10); 42 (1 to 10); 43 (1, 2, 9); 44 (1, 3, 5); 45 (1 to 6, 8 to 10); 46 (1, 3, 5 to 10); 47 (1 to 10); 48 (Supplement_1, 1 to 5, 7 to 9); 49 (11); 50 (Supplement_1, 1, 7 to 12); 51 (1)
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Internet Archive
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Preserved
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2025-08-08
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14 to 32
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Portico
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Preserved
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2026-04-02
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Preserved : 1976: 1(1-4), 1977: 2(1-4), 1978: 3(1-4), 1979: 4(1-4), 1980: 5(1-4), 1981: 6(1-4), 1982: 7(1-4), 1983: 8(1-4), 1984: 9(1-4), 1985: 10(1-4), 1986: 11(1-4), 1987: 12(1-4), 1988: 13(1-4), 1989: 14(1-4), 1990: 15(1-6), 1991: 16(1-6), 1992: 17(1-6), 1993: 18(1-6), 1994: 19(1-6), 1995: 20(1-6), 1996: 21(1-6), 1997: 22(1-6), 1998: 23(1-3, 5-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 2000: 25(1-2, 4-6, 8), 2001: 26(1-2, 4-8), 2002: 27(2-8), 2003: 28(1-2, 4), 2004: 29(2-8), 2005: 30(1-8), 2006: 31(1-10), 2007: 32(1-10), 2007/2008: 33(1-10), 2008/2009: 34(1-10), 2009/2010: 35(1-10), 2009/2010/2011: 36(1-10), 2012: 37(1-10), 2012/2013: 38(1-10), 2013/2014: 39(1-10), 2014/2015: 40(1-10), 2015/2016: 41(1-10), 2017: 42(1-10), 2018: 43(1-10), 2019: 44(1-10), 2020: 45(1-10), 2021: 46(1-10), 2022: 47(1-10), 2023: 48(1-12), 2024: 49(1-12), 2025: 50(1-12), 2026: 51(1-3)
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LOCKSS Archive
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Preserved
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2026-04-06
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30 to 49
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CLOCKSS Archive
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Preserved
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2026-04-06
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33 to 43
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CLOCKSS Archive
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In Progress
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2026-04-06
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44 to 50
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LOCKSS Archive
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In Progress
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2026-04-06
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50, 51
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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 : 4 (1 to 9); 5 (Supplement_1, 1 to 7); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 9); 38 (1 to 9); 39 (1 to 9); 41 (1 to 9); 42 (1 to 9); 43 (1 to 9); 44 (1 to 9); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 3, 6 to 9, 11, 12); 49 (Supplement_1, 1 to 9, 11, 12)
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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 : 4 (1 to 9); 5 (Supplement_1, 1 to 9); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 9); 38 (1 to 9); 39 (1 to 9); 41 (1 to 9); 42 (1 to 9); 43 (1 to 9); 44 (1 to 9); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 3, 6 to 9, 11, 12); 49 (Supplement_1, 1 to 9, 11, 12)
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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 : 1 (2-4); 2 (2-4); 3; 4 (1, 3, 4); 5 (2, 3); 6 (2, 4); 7 (1, 3, 4); 8 (1-4); 9 (2-4); 10 (1-4); 11 (2-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-6); 16 (1-6); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6)
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British Library
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Preserved
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2019-09-18
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Preserved : 39 (1 to 7; 10), 40 (1 to 7; 9 to 10), 41 (4 to 10), 42 (1 to 2; 4; 7), 43 (2)
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