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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 54 (3); 56 (, 4); 57 (, 1, 4); 60 (, 2 to 4); 61 (, 1 to 4); 62 (, 1 to 5); 63 (, 1 to 5); 64 (, 1 to 5); 65 (, 1 to 5); 66 (, 1 to 5); 67 (, 1 to 5); 68 (, 1 to 5); 69 (, 1 to 6); 70 (, 1 to 5); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1 to 6); 77 (, 1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 80 (, 1 to 6); 81 (, 1 to 6); 82 (, 1 to 6); 83 (, 1 to 6); 84 (, 1 to 6); 85 (, 1 to 6); 86 (, 1 to 6); 87 (, 1 to 4); 1992; 1994; 1995; 1998; 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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1 to 70
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CLOCKSS Archive
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Preserved
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2026-02-09
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14, 53 to 88
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 35(1-4), 1974: 36(1-4), 1975: 37(1-4), 1976: 38(1-4), 1977: 39(1-4), 1978: 40(1-4), 1979: 41(1-4), 1980: 42(1-4), 1981: 43(1-4), 1982: 44(1-4), 1983: 45(1-4), 1984: 46(1-4), 1985: 47(1-4), 1986: 48(1-4), 1987: 49(1-4), 1988: 50(1-4), 1989: 51(1-4), 1990: 52(1-4), 1991: 53(1-4), 1992: 54(1-4), 1993: 55(1-4), 1994: 56(1-3), 1995: 57(1-3), 1996: 58(1-4), 1997: 59(1-4), 1998: 60(1-4), 1999: 61(1-4), 2000: 62(1-5), 2001: 63(1-5), 2002: 64(1-5), 2003: 65(1-5), 2004: 66(1-5), 2005: 67(1-5), 2006: 68(1-5), 2007: 69(1-6), 2008: 70(1-5), 2009: 71(1-6), 2010: 72(1-6), 2011: 73(1-6), 2012: 74(1-6), 2013: 75(1-6), 2014: 76(1-6), 2015: 77(1-6), 2016: 78(1-6), 2017: 79(1-6), 2018: 80(1-6), 2019: 81(1-6), 2020: 82(1-6), 2021: 83(1-6), 2022: 84(1-6), 2023: 85(1-6), 2024: 86(1-6), 2025: 87(1-6), 2026: 88(1)
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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 : 6 (1 to 4); 7 (, 1 to 5); 8 (1 to 6); 59 (1 to 4); 61 (S1, 1 to 4); 62 (, 1 to 5); 63 (, 1 to 5); 64 (, 1 to 5); 65 (, 1 to 5); 66 (, 1 to 5); 67 (, 1 to 5); 68 (, 1 to 5); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (1 to 6); 79 (1 to 6); 81 (1 to 6); 82 (1 to 6); 83 (1 to 6); 84 (1 to 6); 85 (1 to 6); 86 (1 to 6); 87 (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 : 6 (1 to 4); 7 (, 1 to 5); 8 (1 to 6); 59 (1 to 4); 61 (S1, 1 to 4); 62 (, 1 to 5); 63 (, 1 to 5); 64 (, 1 to 5); 65 (, 1 to 5); 66 (, 1 to 5); 67 (, 1 to 5); 68 (, 1 to 5); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (1 to 6); 79 (1 to 6); 81 (1 to 6); 82 (1 to 6); 83 (1 to 6); 84 (1 to 6); 85 (1 to 6); 86 (1 to 6); 87 (1 to 5)
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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 : 68 (s1, 1-5); 69 (1-6)
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