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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 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1, 2, 3-4); 5 (, 1-2, 3-4); 6 (, 1-2, 3-4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1, 2-3, 4); 10 (, 1, 2-4); 11 (, 1, 2-3, 4); 12 (, 1-2, 3-4); 13 (, 1 to 4); 14 (, 1-2, 3-4); 15 (, 1-2, 3-4); 16 (, 1-2, 3-4); 17 (, 1-2, 3-4); 18 (, 1-2, 3-4); 19 (, 1-2, 3-4); 20 (, 1-2, 3-4); 21 (, 1 to 4); 22 (, 1-2, 3, 4); 23 (, 1, 2, 3-4); 24 (, 1-2, 3-4); 25 (, 1-2, 3, 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 5); 37 (, 1 to 5); 38 (, 1 to 5); 39 (, 1 to 5); 40 (, 1 to 5); 41 (, 1 to 5); 42 (, 1, 4, 5); 43 (, 1 to 5); 44 (, 1 to 5); 45 (, 1 to 5); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 4); 1978; 1979; 1980; 1981; 1982; 1983; 1984; 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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Internet Archive
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Preserved
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2025-08-08
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1 to 34
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 31(4), 2006: 32(1-4), 2006/2007: 33(1-3)
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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 51
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 50
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LOCKSS Archive
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In Progress
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2026-02-09
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51
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Portico
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Preserved
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2026-02-12
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Preserved : 1977/1978: 1(1-4), 1978: 2(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1979/1980: 3(2, 4), 1980: 4(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1982: 5(1-4), 1982: 6(1-2), 1983/1984: 7(1-2, 4), 1984/1985: 8(1-4), 1985/1986: 9(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 11(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 12(1-2), 1989/1990: 13(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 16(1-4), 1993: 18(1-2), 1994: 19(3-4), 1994: 20(1-2), 1995: 21(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 22(1-2), 1997: 23(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 24(3-4), 1999: 25(1-2), 1999: 26(1-2), 2000: 27(1-2), 2001: 28(1-2), 2002: 29(1-2), 2003: 30(1-2), 2004/2005: 31(1-4), 2005: 32(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 33(1-2), 2007: 34(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 35(1), 2010: 36(1), 2011: 37(1-5), 2012: 38(1-5), 2013: 39(1-5), 2014: 40(1-5), 2015: 41(1-5), 2016: 42(1-5), 2017: 43(1-5), 2018: 44(1-5), 2019: 45(1-5), 2020: 46(1-6), 2020/2021: 47(1-6), 2022: 48(1-6), 2023: 49(1-6), 2024: 50(1-6), 2025: 51(1-6), 2026: 52(1)
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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 4); 4 (1 to 5); 5 (1 to 6); 22 (1-2, 3, 4); 23 (1, 2, 3-4); 24 (1-2, 3-4); 25 (1-2, 3, 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 5); 37 (1 to 5); 38 (1 to 5); 39 (1 to 5); 41 (1 to 5); 42 (1 to 5); 43 (1 to 5); 44 (1 to 5); 45 (1 to 5); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1, 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 (1-4); 2 (1-4); 3 (1-4); 4 (1, 2, 3-4); 5 (1-2, 3-4); 6 (1-2, 3-4); 7 (1-4); 8 (1-4); 9 (1, 2-3, 4); 10 (1, 2-4); 11 (1, 2-3, 4); 12 (1-2, 3-4); 13 (1-4); 14 (1-2, 3-4); 15 (1-2, 3-4); 16 (1-2, 3-4); 17 (1-2, 3-4); 18 (1-2, 3-4); 19 (1-2, 3-4); 20 (1-2, 3-4); 21 (1-4); 22 (1-2, 3, 4); 23 (1, 2, 3-4); 24 (1-2, 3-4); 25 (1-2, 3, 4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4)
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Library of Congress
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Preserved
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2025-04-07
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36 (1); 37 (1); 43 (2 to 5); 44 (1 to 5); 45 (1 to 5); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 5)
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