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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 to 12); 2 (, 1 to 12); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 6); 7 (, 2); 19 (, 3); 21 (, 2); 29 (, 1 to 8, 10 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 10, 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 11); 44 (, 2, 4 to 12); 45 (, 1 to 12); 46 (, 1 to 11); 47 (, 4 to 12); 48 (, 1 to 3); 1925; 1926; 1927; 1928; 1929; 1930; 1971; 1973; 1974; 1975; 1977; 1989; 1991; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 1(1-2), 1972: 2(1-2), 1973: 3(1-2), 1974: 4(1-2), 1975: 5(1-2), 1976: 6(1-2), 1977: 7(1-2), 1978: 8(1-2), 1979: 9(1-2), 1980: 10(1-2), 1981: 11(1-3), 1982: 12(1-3), 1983: 13(1-4), 1984: 14(1-4), 1985: 15(1-4), 1986: 16(1-4), 1987: 17(1-4), 1988: 18(1-4), 1989: 19(1-4), 1990: 20(1-4), 1991: 21(1-6), 1992: 22(1-6), 1993: 23(1-6), 1994: 24(1-6), 1995: 25(1-6), 1996: 26(1-6), 1997: 27(1-6), 1998: 28(1-12), 1999: 29(1-12), 2000: 30(1-12), 2001: 31(2-12), 2002: 32(1-12), 2003: 33(1-12), 2004: 34(1-12), 2005: 35(1-4, 6-12), 2006: 36(1-4, 6-12), 2007: 37(1-12), 2008: 38(1-12), 2008/2009: 39(1-12), 2010: 40(1-12), 2011: 41(1-12), 2012: 42(1-12), 2013: 43(1-12), 2014: 44(1-12), 2014/2015: 45(1-12), 2015/2016: 46(1-12), 2017: 47(1-12), 2018: 48(1-12), 2019: 49(1-12), 2020: 50(1-12), 2021: 51(1-12), 2022: 52(1-12), 2023: 53(1-12), 2024: 54(1-12), 2025: 55(1-12), 2026: 56(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 54
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CLOCKSS Archive
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Preserved
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2026-02-09
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38 to 45
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CLOCKSS Archive
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In Progress
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2026-02-09
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46 to 55
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LOCKSS Archive
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In Progress
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2026-02-09
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55
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 3 (1, 2); 4 (, 1, 2); 21 (, 1, 3 to 6); 48 (, 4 to 6, 9, 11, 12); 49 (, 1 to 4, 6, 7, 9); 50 (, 1 to 4, 6, 7, 9 to 12); 51 (, 1 to 5, 7 to 10, 12); 52 (, 1 to 12); 53 (, 1 to 5, 8 to 11); 54 (, 4, 10, 12); 55 (, 1, 2); 1973; 1974; 1991; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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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 9, 11, 12); 5 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (suppl_1, 1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (Supplement_1, 1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 4, 7 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 8)
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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 9, 11, 12); 5 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (suppl_1, 1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (Supplement_1, 1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 4, 7 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9)
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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); 3; 7; 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1-4); 12 (1-3); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1, 2, 4); 18 (2-4); 19 (1-4); 20 (1-4); 21 (1-6)
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British Library
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Preserved
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2019-09-18
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Preserved : 44 (1 to 7; 9; 11 to 12), 45 (1 to 10), 46 (1 to 3; 5 to 11), 47 (4 to 7; 12), 48 (2; 9; 11 to 12), 49 (2; 4; 6)
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