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Internet Archive
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Preserved
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2025-08-08
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1 to 27
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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); 8 (, 1); 9 (, 1); 10 (, 1); 11 (, 1); 13 (, 1); 14 (, 1); 15 (, 1); 16 (, 1); 17 (, 1); 18 (, 1); 19 (, 1); 20 (, 1); 21 (, 1); 22 (, 1); 23 (, 1); 24 (, 1); 25 (, 1); 26 (, 1); 27 (, 1); 28 (, 1); 29 (, 1); 30 (, 1); 31 (, 1); 32 (, 1, 2); 33 (, 1, 2); 34 (, 2); 35 (, 1, 2); 36 (, 1, 2); 37 (, 2); 38 (, 1, 2); 39 (, 1); 40 (, 1, 2); 41 (, 1, 2); 42 (, 1, 2); 43 (, 1-2); 44 (, 1, 2); 45 (, 1, 2); 46 (, 1, 2); 1964; 1967; 1968; 1974; 1979; 1985; 1986; 1987; 1988; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 11, 13 to 45
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 11, 13 to 47
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LOCKSS Archive
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In Progress
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2026-02-09
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46
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Portico
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Preserved
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2026-02-12
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Preserved : 1964: 1(1), 1967: 2(1), 1968: 3(1), 1974: 4(1), 1979: 5(1), 1980: 6(1), 1982: 7(1), 1985: 8(1), 1986: 9(1), 1987: 10(1), 1988: 11(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 13(1), 1991: 14(1), 1992: 15(1), 1993: 16(1), 1994: 17(1), 1995: 18(1), 1996: 19(1), 1997: 20(1), 1998: 21(1), 1999: 22(1), 2000: 23(1), 2001: 24(1), 2002: 25(1), 2003: 26(1), 2004: 27(1), 2005: 28(1), 2007: 29(1), 2008: 30(1), 2009: 31(1), 2010: 32(1-2), 2011: 33(1-2), 2012: 34(1-2), 2013: 35(1-2), 2014: 36(1-2), 2015: 37(1-2), 2016: 38(1-2), 2017: 39(1-2), 2018: 40(1-2), 2019: 41(1-2), 2020: 42(1-2), 2021: 43(1-2), 2022: 44(1-2), 2023: 45(1-2), 2024: 46(1-2), 2025: 47(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 : 2 (1); 3; 4 (2); 21 (1); 22; 23; 24; 25; 26; 27; 28; 29; 31; 32 (2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42; 43 (1-2); 44 (2); 45 (1, 2); 46 (1)
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Library of Congress
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Preserved
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2025-04-07
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32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1-2); 44 (1, 2); 45 (1, 2); 46 (1)
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