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Internet Archive
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Preserved
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2025-08-08
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1 to 28
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 9 (1, 2); 10 (, 1, 2); 11 (, 1, 2); 12 (, 1, 2); 13 (, 1, 2); 14 (, 1, 2); 15 (, 1, 2); 16 (, 1, 2); 19 (, 1, 2); 20 (, 1-2); 21 (, 1, 2); 22 (, 1); 23 (, 1); 24 (, 1); 25 (, 1); 26 (, 1); 27 (, 1); 28 (, 1); 29 (, 1); 30 (, 1); 31 (, 1); 32 (, 1); 33 (, 1); 34 (, 1); 35 (, 1); 36 (, 1); 37 (, 1); 38 (, 1); 39 (, 1); 40 (, 1); 42 (, 1, 2); 43 (, 1, 2); 44 (, 1, 2); 45 (, 1, 2); 46 (, 1, 2); 47 (, 1, 2); 48 (, 1, 2); 49 (, 1, 2); 50 (, 1, 2); 51 (, 1, 2); 52 (, 1, 2); 53 (, 1, 2); 54 (, 1, 2); 55 (, 1, 2); 56 (, 1, 2); 1965; 1966; 1968; 1969; 1971; 1973; 1974; 1978; 1985; 1987; 1988; 1990; 1991; 1992; 1993; 1994; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 9(1-2), 1966: 10(1-2), 1968: 11(1-2), 1969: 12(1-2), 1971: 13(1-2), 1973: 14(1-2), 1974: 15(1-2), 1978: 16(1-2), 1982: 17(1-2), 1983: 18(1-2), 1985: 19(1-2), 1987: 20(1-2), 1988: 21(1-2), 1990: 22(1), 1991: 23(1), 1992: 24(1), 1992: 25(1), 1993: 26(1), 1994: 27(1), 1996: 28(1), 1997: 29(1), 1998: 30(1), 1999: 31(1), 2000: 32(1), 2001: 33(1), 2002: 34(1), 2003: 35(1), 2004: 36(1), 2005: 37(1), 2006: 38(1), 2007: 39(1), 2008: 40(1), 2009: 41(1), 2010: 42(1, S 1, 2), 2011: 43(1-2), 2012: 44(1-2), 2013: 45(1-2), 2014: 46(1-2), 2015: 47(1-2), 2016: 48(1-2), 2017: 49(1-2), 2018: 50(1-2), 2019: 51(1-2), 2020: 52(1-2), 2021: 53(1-2), 2022: 54(1-2), 2023: 55(1, sup1, 1, 2), 2024: 56(1-2), 2025: 57(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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9 to 56
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CLOCKSS Archive
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Preserved
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2026-02-09
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9 to 57
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LOCKSS Archive
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In Progress
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2026-02-09
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57
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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); 4; 5 (2); 29 (1); 31; 32; 33; 34; 35; 36; 37; 38; 39; 41; 42 (sup1, 1, 2); 43 (1, 2); 44 (1, 2); 45 (1, 2); 46 (1, 2); 47 (sup1, 1, 2); 48 (1, 2); 49 (1, 2); 51 (1, 2); 52 (1, 2); 53 (1, 2); 54 (1, 2); 55 (sup1, 1, 2); 56 (1, 2)
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Library of Congress
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Preserved
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2025-04-07
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42 (sup1, 1, 2); 43 (1, 2); 44 (1, 2); 45 (1, 2); 46 (1, 2); 47 (sup1, 1, 2); 48 (1, 2); 49 (1, 2); 50 (1, 2); 51 (1, 2); 52 (1, 2); 53 (1, 2); 54 (1, 2); 55 (sup1, 1, 2); 56 (1, 2)
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