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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 5 (1 to 15); 6 (, 1 to 15); 7 (, 1 to 15); 8 (, 1 to 15); 10 (, 4); 12 (, 6, 17); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 4, 5-6, 7 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1, 2, 3-4, 5 to 12); 29 (, 1 to 4, 5-6, 7, 8, 9-10, 11, 12); 34 (, 1, 2); 35 (, 4, 6 to 12); 37 (, 2 to 12, 14 to 20); 38 (, 1, 3 to 5, 7 to 10, 12 to 15, 16-17); 39 (, 1 to 7, 8-9, 10 to 20); 40 (, 1 to 18, 19-20, 21 to 24); 41 (, 1 to 9, 15, 16-17, 18 to 24); 42 (, 1 to 24); 43 (, 1 to 9, 10-12, 13 to 24); 44 (, 1 to 12, 15, 16, 18 to 24); 45 (, 1 to 5, 7, 10 to 24); 46 (, 1 to 24); 47 (, 4 to 24); 48 (, 1 to 24); 49 (, 1 to 24); 50 (, 1 to 24); 51 (, 1 to 24); 52 (, 1 to 21, 23, 24); 53 (, 1 to 4, 6 to 24); 54 (, 1 to 19); 1976; 1977; 1978; 1979; 1981; 1983; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2005; 2006; 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 : 1976: 5(1-14)
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 6(1-14), 1978: 7(1-14), 1979: 8(1-14), 1980: 9(1-14)
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 10(1-22), 1982: 11(1-22), 1983: 12(1-22), 1984: 13(1-22)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 14(1-12), 1986: 15(1-12), 1987: 16(1-12), 1988: 17(1-12), 1989: 18(1-8), 1990: 19(1-8), 1991: 20(1-4, 7-9), 1992: 21(1-8, 12), 1992/1993: 22(1-8), 1994: 23(1-8), 1995: 24(1-8), 1996: 25(1-8)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 26(1-12), 1998: 27(1-12), 1999: 28(1-12), 2000: 29(1-12), 2001: 30(1-7, 10-12), 2002: 31(1-12), 2003: 32(1-12), 2004/2005: 33(1-12), 2005: 34(1-8, 11-12), 2006: 35(1-12), 2007: 36(1-16), 2008: 37(1-20), 2008/2009: 38(1-20), 2009/2010: 39(1-20), 2011: 40(1-24), 2012: 41(1-24), 2013: 42(1-24), 2014: 43(1-24), 2015: 44(1-24), 2016: 45(1-24), 2017: 46(1-24), 2018: 47(1-24), 2019: 48(1-24), 2020: 49(1-24), 2020/2021: 50(1-24), 2020/2021/2022: 51(1-24), 2023: 52(1-24), 2024: 53(1-24), 2024/2025: 54(1-24), 2026: 55(1-6)
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LOCKSS Archive
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Preserved
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2026-02-09
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5 to 53
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print, 5 to 54
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LOCKSS Archive
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In Progress
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2026-02-09
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54
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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 (2 to 7, 8-9, 11, 12); 4 (1 to 9, 11 to 18, 19-2, 21 to 24); 5 (1 to 9, 11 to 19, 21 to 24); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1, 2, 3-4, 5 to 9, 11, 12); 29 (1 to 4, 5-6, 7, 8, 9-1, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 8, 9-1, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11 to 16); 37 (1 to 9, 11 to 19); 38 (1 to 9, 11 to 15, 16-17, 18, 19); 39 (1 to 7, 8-9, 11 to 19); 41 (1 to 9, 11, 12, 13-14, 15, 16-17, 18, 19, 21 to 24); 42 (1 to 9, 11 to 19, 21 to 24); 43 (1 to 9, 13 to 19, 21 to 24); 44 (1 to 9, 11 to 19, 21 to 24); 45 (1 to 9, 11 to 19, 21 to 24); 46 (1 to 9, 11 to 19, 21 to 24); 47 (1 to 9, 11 to 19, 21 to 24); 48 (1 to 9, 11 to 19, 21 to 24); 49 (1 to 9, 11 to 19, 21 to 24); 51 (1 to 9, 11 to 19, 21 to 24); 52 (1 to 9, 11 to 19, 21 to 24); 53 (1 to 9, 11 to 19, 21 to 24); 54 (1 to 8, 11, 12)
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Library of Congress
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Preserved
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2025-04-07
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39 (3 to 8-9, 10 to 20); 40 (1 to 19-20, 21 to 24); 41 (1 to 13-14, 15, 16-17, 18 to 24); 42 (1 to 24); 43 (1 to 10-12, 13 to 24); 44 (1 to 24); 45 (1 to 24); 46 (1 to 24); 47 (1 to 24); 48 (1 to 4, 8 to 24); 49 (1 to 24); 50 (1 to 24); 51 (1 to 24); 52 (1 to 24); 53 (1 to 24)
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