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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); 2 (, 1, 2); 3 (, 1, 2); 4 (, 1, 2); 5 (, 1, 2); 6 (, 1, 2); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1-2, 3, 4); 14 (, 1, 2-3, 4); 15 (, 1, 2, 3-4); 16 (, 1 to 4); 17 (, 1, 2-3, 4); 18 (, 1, 2-3, 4); 19 (, 1 to 4); 20 (, 1, 2-3, 4); 21 (, 1-2, 3, 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1-2, 3, 4); 27 (, 1, 2-3, 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1, 2, 3-4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1-3, 4); 36 (, 1, 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1, 3, 4); 41 (, 1 to 4); 42 (, 2 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 3); 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 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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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), 1973/1974: 3(1-2), 1975/1976: 4(1-2), 1977: 5(1-2), 1978/1979: 6(1-2), 1980: 7(1-2), 1981/1982: 8(1-2), 1982/1983/1984: 9(1-4), 1984: 10(1-2), 1985: 11(1-4), 1986/1987: 12(1-4), 1988: 13(3-4), 1989: 14(1, 4), 1990: 15(1-2), 1990/1991/1992: 16(1-4), 1992/1993: 17(1, 4), 1993/1994: 18(1-4), 1994: 19(1-4), 1995: 20(1, 4), 1996: 21(3-4), 1997/1998: 22(1-4), 1998/1999: 23(1-4), 1999/2000: 24(1-4), 2001: 25(1-4), 2002: 26(3-4), 2003: 27(1, 4), 2004: 28(1-4), 2004/2005: 29(1-4), 2006: 30(1-2), 2007: 31(1-4), 2008: 32(1-4), 2009: 33(1-4), 2010: 34(1-4), 2011: 35(1-4), 2012: 36(1-4), 2013: 37(1-4), 2014: 38(1-4), 2015: 39(1-4), 2016: 40(1-4), 2017: 41(1-4), 2018: 42(1-4), 2019: 43(1-4), 2020: 44(1-4), 2021: 45(1-4), 2022: 46(1-4), 2023: 47(1-4), 2024: 48(1-4), 2025: 49(1-4), 2026: 50(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 48
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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 to 49
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LOCKSS Archive
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In Progress
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2026-02-09
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49
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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 : 43 (3, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1)
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Library of Congress
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Preserved
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2025-04-07
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34 (2 to 4); 35 (1-3, 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4)
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