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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); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1); 11 (, 1); 12 (, 1); 13 (, 1); 14 (, 1); 15 (, 1); 16 (, 1); 17 (, 1); 18 (, 1); 19 (, 1); 20 (, 1, 2); 21 (, 1, 2); 22 (, 1); 23 (, 1, 2); 27 (, 1, 2); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 5); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 2 to 6); 46 (, 1 to 6); 47 (, 1 to 3, 5, 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 5); 1970; 1971; 1972; 1973; 1974; 1976; 1977; 1978; 1980; 1982; 1983; 1984; 1985; 1986; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 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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CLOCKSS Archive
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Preserved
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2026-02-09
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27 to 53
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 27(1-2), 2001: 28(1-4), 2002: 29(1-4), 2003: 30(1-4), 2004: 31(1-4), 2005: 32(1-6), 2006: 33(1-6), 2007: 34(1-6), 2008: 35(1-6), 2009: 36(1-6), 2010: 37(1-6), 2011: 38(1-6), 2012: 39(1-6), 2013: 40(1-6), 2014: 41(1-6), 2015: 42(1-6), 2016: 43(1-6), 2017: 44(1-6), 2018: 45(1-6), 2019: 46(1-6), 2020: 47(1-6), 2021: 48(1-6), 2022: 49(1-6), 2023: 50(1-6), 2024: 51(1-6), 2025: 52(1-6), 2026: 53(1)
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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), 1971: 2(1), 1972: 3(1), 1973: 4(1), 1974: 5(1), 1976: 6(1), 1977: 7(1), 1978: 8(1), 1980: 9(1), 1982: 10(1, S 1), 1983: 11(1), 1984: 12(1), 1985: 13(1), 1986: 14(1), 1988: 15(1), 1989: 16(1), 1990: 17(1), 1991: 18(1, s1), 1992: 19(1), 1993: 20(1-2), 1994: 21(1-2), 1995: 22(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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10, 18 to 43
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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 23(1-2), 1997: 24(1-2), 1998: 25(1), 1999: 26(1), 2000: 27(1-2), 2001: 28(1-4), 2002: 29(1-4), 2003: 30(1-4), 2004: 31(1-4), 2005: 32(1-6), 2006: 33(1-6), 2007: 34(1-6), 2008: 35(1-6), 2009: 36(1-6), 2010: 37(1-6), 2011: 38(1-6), 2012: 39(1-6), 2013: 40(1-6), 2014: 41(1-6), 2015: 42(1-6), 2016: 43(1-6)
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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 : 3 (1 to 4); 4 (1 to 6); 24 (1, 2); 25 (1); 26; 27 (2); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6)
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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 : 3 (1 to 4); 4 (1 to 6); 24 (1, 2); 25 (1); 26; 27 (2); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6)
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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 : 27 (1, 2); 28 (1, 2, 4); 29 (1, 2, 4); 30 (1-4); 31 (2, 4); 32 (2-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-4); 38 (1, 3-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-3, 5, 6); 45 (2, 3, 5, 6); 46 (1, 2, 4, 6)
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