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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 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (:, 1 to 6); 29 (1 to 6); 30 (Supplement:, 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 6); 37 (1 to 6); 38 (1 to 6); 39 (Supplement, 1 to 6); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (Supplement, 1 to 6); 44 (suppl_1, 1 to 6); 45 (1 to 3, 5, 6); 46 (1 to 4, 6); 47 (1, 2, 4 to 6); 48 (Supplement_1, 1 to 5); 49 (Supplement_1, 1 to 6); 50 (Supplement_1, 1, 3 to 6); 51 (1 to 6); 52 (1 to 5); 53 (1 to 6); 54 (1 to 6); 55 (Supplement_1, 1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1 to 36
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Portico
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Preserved
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2026-04-16
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Preserved : 1980: 9(4), 1981: 10(1-4), 1982: 11(1-4), 1983: 12(1-4), 1984: 13(1-4), 1985: 14(1-4), 1986: 15(1-4), 1987: 16(1-4), 1988: 17(1-4), 1989: 18(1-4), 1990: 19(1-4), 1991: 20(1-4), 1992: 21(1-6), 1993: 22(1-6), 1994: 23(1-6), 1995: 24(1-6), 1996: 25(1-6), 1997: 26(1-6), 1998: 27(1-6), 1999: 28(1-6), 2000: 29(1-2, 4-6), 2001: 30(1-3, 5-6), 2002: 31(1, 3-6), 2003: 32(1-6), 2004: 33(1-6), 2005: 34(1-6), 2006: 35(1-6), 2007: 36(1-6), 2008: 37(1-6), 2008/2009: 38(1-6), 2009/2010: 39(1-6), 2011: 40(1-6), 2012: 41(1-6), 2012/2013: 42(1-6), 2014: 43(1-6), 2014/2015: 44(1-6), 2016: 45(1-6), 2017: 46(1-6), 2018: 47(1-6), 2019: 48(1-6), 2020: 49(1-6), 2021: 50(1-6), 2022: 51(1-6), 2023: 52(1-6), 2024: 53(1-6), 2025: 54(1-6), 2026: 55(1-2)
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LOCKSS Archive
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Preserved
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2026-04-13
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34 to 36, 39 to 53
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CLOCKSS Archive
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Preserved
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2026-04-13
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37 to 47, 54, 55
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CLOCKSS Archive
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In Progress
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2026-04-13
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48 to 54
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LOCKSS Archive
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In Progress
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2026-04-13
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54, 55
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 53 (2 to 6); 54 (1, 4, 5); 55 (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 : ; 4 (1 to 6); 5 (Supplement_1, 1 to 6); 23 (5); 27; 35 (1 to 6); 36 (1 to 6); 37 (suppl_1, 1 to 6); 38 (1 to 6); 39 (suppl_1, 1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (suppl_1, 1 to 6); 44 (suppl_1, 1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (Supplement_1, 1 to 6); 49 (Supplement_1, 1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 5)
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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 6); 5 (Supplement_1, 1 to 6); 23 (5); 27; 35 (1 to 6); 36 (1 to 6); 37 (suppl_1, 1 to 6); 38 (1 to 6); 39 (suppl_1, 1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (suppl_1, 1 to 6); 44 (suppl_1, 1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (Supplement_1, 1 to 6); 49 (Supplement_1, 1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6)
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British Library
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Preserved
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2019-09-18
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Preserved : 43 (1 to 2; 5 to 6), 44 (1 to 5), 45 (3; 5 to 6), 46 (1; 3), 47 (1; 3 to 6), 48 (S1)
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