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Internet Archive
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Preserved
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2025-08-08
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1 to 58
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 44 (1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1, 2-3, 4); 48 (, 2 to 4); 49 (, 1-2, 3, 4); 50 (, 1 to 3); 51 (, 1, 4); 52 (, 1, 2, 3-4); 53 (, 1, 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1, 2, 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1 to 4); 69 (, 1, 2-4); 70 (, 1); 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 : 1972: 17(1-4), 1973: 18(1-4), 1974: 19(1-4), 1975: 20(1-4), 1976: 21(1-4), 1977: 22(1-4), 1978: 23(1-4), 1979: 24(1-4), 1980: 25(1-4), 1981: 26(1-4), 1982: 27(1-4), 1983: 28(1-4), 1984: 29(1-4), 1985: 30(1-4), 1986: 31(1-4), 1987: 32(1-4), 1988: 33(1-4)
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CLOCKSS Archive
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In Progress
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2026-02-09
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31 to 33, 35 to 58, 62 to 70
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LOCKSS Archive
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In Progress
|
2026-02-09
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31 to 33, 35 to 44, 46, 47, 70
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Portico
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Preserved
|
2026-02-12
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Preserved : 1990: 35(1-4), 1991: 36(1-4), 1992: 37(1-4), 1993: 38(1-4), 1994: 39(1-4), 1995: 40(1-4), 1996: 41(1-4), 1997: 42(1-4), 1998: 43(1-4), 1999: 44(1-4), 2000: 45(1-4), 2001: 46(1-4), 2002: 47(1-4), 2003: 48(2-4), 2004: 49(1-4), 2005: 50(1-3), 2006: 51(1, 4), 2007: 52(1-4), 2008: 53(1, 4), 2009: 54(1-4), 2010: 55(1-4), 2011: 56(1-4), 2012: 57(1-4), 2013: 58(1-2, 4), 2014: 59(1-4), 2015: 60(1-4), 2016: 61(1-4), 2017: 62(1-4), 2018: 63(1-4), 2019: 64(1-4), 2020: 65(1-4), 2021: 66(1-4), 2022: 67(1-4), 2023: 68(1-4), 2024: 69(1-4), 2025: 70(1-4)
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LOCKSS Archive
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Preserved
|
2026-02-09
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45, 48 to 69
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CLOCKSS Archive
|
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Preserved
|
2026-02-09
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|
59 to 61
|
|
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British Library
|
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Preserved
|
2019-09-18
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Preserved : 60 (1 to 4), 61 (1 to 4), 62 (1 to 4), 63 (1 to 3)
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Library of Congress
|
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Preserved
|
2025-04-07
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55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1, 2, 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1, 2-4)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 31 (4); 32; 33; 35 (1, 3); 36 (1, 3, 4); 37 (1-4); 38 (2, 3); 39 (1, 3, 4); 40 (1-4); 41 (1); 42 (2-4); 43 (1, 2, 3-4); 44 (1, 3); 45 (1-4); 46 (1-4); 47 (1, 2-3, 4); 48 (2-4); 49 (1-2, 3, 4); 50 (1-3); 51 (1, 4); 52 (1, 2, 3-4); 53 (1, 4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1, 2, 4); 59 (1-4); 60 (1, 4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (1-4)
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