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Internet Archive
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Preserved
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2025-08-08
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3 to 23
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 29 (1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 6); 52 (, 1 to 3, 4-6); 53 (, 1-2, 3, 4, 5-6); 54 (, 1 to 3, 4-5, 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (, 1 to 6); 59 (, 1, 2 to 4 to 6); 60 (, 1 to 4, 5_suppl); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 1(1-4), 1971: 2(1-4), 1972: 3(1-4), 1973: 4(1-4), 1974: 5(1-4), 1975: 6(1-4), 1977: 7(1-4), 1978: 8(1-4), 1979: 9(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 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), 1990: 20(1-4), 1991: 21(1-4), 1992: 22(1-4), 1993: 23(1-4), 1994: 24(1-4), 1995: 25(1-4), 1996: 26(1-4), 1997: 27(1-4), 1998: 28(1-4), 1999: 29(1-4), 2000: 30(1-4), 2001: 31(1-4), 2002: 32(1-4), 2003: 33(1-4), 2004: 34(1-4), 2005: 35(1-4), 2006: 36(1-4), 2007: 37(1-4), 2008: 38(1-4), 2009: 39(1-4), 2010: 40(1-4), 2011: 41(1-4), 2011: 42(1-4), 2012: 43(1-4), 2012: 44(1-4), 2013: 45(1-4), 2013: 46(1-4), 2014: 47(1-4), 2014: 48(1-4), 2015: 49(1-4), 2015: 50(1-4), 2016: 51(1-6), 2017: 52(1-6), 2018: 53(1-6), 2019: 54(1-6), 2020: 55(1-6), 2021: 56(1-6), 2022: 57(1-6), 2023: 58(1-6), 2024: 59(1-2, 2, S, 3, 3, S, 4-6), 2025: 60(1-2, 2, S, 3, 3, S, 4, 4, S, 5, 5, S, 6), 2026: 61(1)
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CLOCKSS Archive
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In Progress
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2026-02-09
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18 to 46, 52 to 60
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LOCKSS Archive
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In Progress
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2026-02-09
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18 to 32, 60
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LOCKSS Archive
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Preserved
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2026-02-09
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33 to 59
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CLOCKSS Archive
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Preserved
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2026-02-09
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47 to 51
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British Library
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Preserved
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2019-09-18
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Preserved : 48 (4), 49 (2 to 4), 50 (1 to 4), 51 (1 to 6), 52 (1 to 3), 53 (3 to 4)
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Library of Congress
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Preserved
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2025-04-07
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40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 6); 52 (1 to 4-6); 53 (1-2, 3 to 5-6); 54 (1 to 4-5, 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (2_suppl, 3_suppl, 1 to 6); 60 (1)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 1 (1-4); 2 (2-4); 3 (1, 2, 4); 4 (1-4); 5 (1-4); 6 (1-2, 3, 4); 7 (1-4); 8 (1-4); 9 (1-3); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-3); 20 (1-4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1, 2, 4); 25 (1, 2, 4); 26 (1-4); 27 (1, 2, 4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-3); 44 (1, 2, 4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-3); 49 (2, 3); 50 (1-3); 51 (1-6); 52 (1-3, 4-6); 53 (1-2, 3, 4, 5-6); 54 (1-3, 4-5, 6)
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