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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1); 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); XV (, 1 to 4); XVI (, 1 to 4); XVII (, 1 to 4); XVIII (, 1 to 4); XIX (, 1 to 4); XX (, 1 to 3); XXI (, 4); XXII (, 1 to 4); XXIII (, 1 to 4); 35 (, 2 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1, 2, 4); 42 (, 1 to 4); 43 (, 1, 2, 4); 44 (, 1, 2, 4); 45 (, 1 to 4); 46 (, 1, 4); 48 (, 1 to 4); 49 (, 1 to 4); 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2020; 2021
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Internet Archive
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Preserved
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2025-08-08
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1 to 41
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 6(1-4), 1979: 7(1-4), 1980: 8(1-4), 1981: 9(1-4), 1982: 10(1-4), 1983: 11(1-4), 1984: 12(1-4), 1985: 13(1-4), 1986: 14(1-4), 1987: XV(1-4), 1988: XVI(1-4), 1989: XVII(1-4), 1990: XVIII(1-4), 1991: XIX(1-4), 1992: XX(1-4), 1993: XXI(1-4), 1994: XXII(1-4), 1995: XXIII(1-4), 1996: XXIV(1-4), 1997: XXV(1-4), 1998: XXVI(1-4), 1999: XXVII(1-4), 2000: XXVIII(1-4), 2001: XXIX(1-4), 2002: XXX(1-4), 2003: XXXI(1-4), 2004: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2007: 35(1-4), 2008: 36(1-4), 2009: 37(1-4), 2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2015: 43(1-4), 2016: 44(1-4), 2017: 45(1-4), 2018: 46(1-4), 2019: 47(1-4), 2020: 48(1-4), 2021: 49(1-4), 2022: 50(1-4), 2023: 51(1-4), 2024: 52(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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32 to 52
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CLOCKSS Archive
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Preserved
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2026-02-09
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36 to 43, 45
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CLOCKSS Archive
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In Progress
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2026-02-09
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44, 46 to 53
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LOCKSS Archive
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In Progress
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2026-02-09
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53
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Portico
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Preserved
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2026-02-12
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Preserved : 2004: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2007: 35(1-4)
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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 4); 5 (1 to 4); 34 (1, 3); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1, 2, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1); 51 (2, 3); 52 (2, 3)
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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 4); 5 (1 to 4); 34 (1, 3); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1, 2, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1); 51 (2, 3); 52 (2, 3)
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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; 2 (2-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-3); 14 (1-4); XV (1-4); XVI (1-4); XVII (1-4); XVIII (1-4); XIX (1-4); XX (1-3); XXI (4); XXII (1-4); XXIII (1-4)
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