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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 31 (1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 12); 44 (, 1 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 8); 51 (, 1 to 8); 52 (, 1 to 8); 53 (, 1 to 8); 54 (, 1 to 8); 55 (, 1 to 8); 56 (, 1 to 8); 57 (, 1, 2-3, 4); 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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7 to 30
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 40, 43, 44
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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 36, 49 to 57
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 34, 57
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 1(1-2), 1970: 2(1-4), 1971: 3(1-4), 1972: 4(1-4), 1973: 5(1-6), 1974: 6(1-6), 1975: 7(1-8), 1976: 8(1-8), 1977: 9(1-12), 1978: 10(1-12), 1979: 11(1-12), 1980: 12(1-12), 1981: 13(1-12), 1982: 14(1-12), 1983: 15(1-12), 1984: 16(1-12), 1985: 17(1-12), 1986: 18(1-12), 1987: 19(1-12), 1988: 20(1-12), 1989: 21(1-12), 1990: 22(1-12), 1991: 23(1-12), 1992: 24(1-12), 1993: 25(1, 1, S, 2-12), 1994: 26(1-12), 1995: 27(1-12), 1996: 28(1-12), 1997: 29(1-12), 1998: 30(1-12), 1999: 31(1-12), 2000: 32(1-12), 2001: 33(1-12), 2002: 34(1-12), 2003: 35(1-12), 2004: 36(1-12), 2005: 37(1-12), 2006: 38(1-12), 2007: 39(1-12), 2008: 40(1-12), 2009: 41(1-12), 2010: 42(1-12), 2011: 43(1-12), 2012: 44(1-12), 2013: 45(1-12), 2014: 46(1-12), 2015: 47(1-12), 2016: 48(1-12), 2017: 49(1-12), 2018: 50(1-8), 2019: 51(1-8), 2020: 52(1-8), 2021: 53(1-8), 2022: 54(1-8), 2023: 55(1-8), 2024: 56(1-8), 2025: 57(1-8), 2026: 58(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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35 to 56
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CLOCKSS Archive
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Preserved
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2026-02-09
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37 to 48
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British Library
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Preserved
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2019-09-18
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Preserved : 47 (1 to 3; 5 to 12), 48 (1 to 12), 49 (1 to 12), 50 (1 to 6)
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Library of Congress
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Preserved
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2025-04-07
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42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1 to 12); 50 (1 to 8); 51 (1 to 8); 52 (1 to 8); 53 (1 to 8); 54 (1 to 8); 55 (1 to 8); 56 (1 to 8)
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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 (1, 2); 2 (1, 2, 4); 3 (1, 2, 4); 4 (2, 3); 5 (2, 3, 5); 6 (2, 3, 5, 6); 7 (1, 2, 5, 7, 8); 8 (1, 3-6, 8); 9 (2, 3, 6, 11); 10 (1, 3, 4, 6, 7, 11, 12); 11 (1-3, 6, 8); 12 (1, 4, 6, 7, 9, 11); 13 (2-4, 7, 9, 11); 14 (1, 3, 7, 9, 11, 12); 15 (1, 3, 4, 8, 9, 11, 12); 16 (2, 3, 5, 6, 8, 9, 12); 17 (5); 18 (3-7, 10, 12); 19 (2-4, 6, 9-11); 20 (1, 2, 7-9, 11, 12); 21 (3-8, 11, 12); 22 (1, 4, 6, 10, 12); 23 (3, 6, 8, 9, 11); 24 (1-12); 25 (1, 2, 4, 7, 8, 10); 26 (1-5, 9, 11, 12); 27 (1-5, 8, 11, 12); 28 (1, 8, 9); 29 (2, 6, 8, 11); 30 (2-4, 6, 7, 9, 10, 12); 31 (1, 5, 7-10); 32 (1-12); 33 (1-12); 34 (1-12); 35 (1-12); 36 (1-12); 37 (1-12); 38 (2-6, 8, 10-12); 39 (1-12); 40 (1-12); 41 (1-12); 42 (1-12); 43 (1-12); 44 (1-12); 45 (1-12); 46 (1-12); 47 (1-6, 8-12); 48 (1-12); 49 (1-12); 50 (1-8); 51 (1-8); 66 (supplement-1)
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