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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 59
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 18 (1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 10); 26 (, 1 to 10); 27 (, 1 to 10); 28 (, 1 to 10); 29 (, 1 to 10); 30 (, 1 to 10); 31 (, 1 to 10); 32 (, 1 to 10); 33 (, 1 to 10); 34 (, 1 to 10); 35 (, 1 to 10); 36 (, 1 to 10); 37 (, 1 to 10); 38 (, 1 to 10); 39 (, 1 to 10); 40 (, 1 to 10); 41 (, 1 to 10); 42 (, 1 to 10); 43 (, 1, 3 to 10); 44 (, 1 to 10); 45 (, 1-2, 3 to 12); 46 (, 1-2, 3 to 12); 47 (, 1-2, 3 to 12); 48 (, 1-2, 3 to 12); 49 (, 1-2, 3 to 12); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 10); 56 (, 1 to 10); 57 (, 1 to 10); 58 (, 1 to 5); 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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to 17
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 1(1-6), 1969: 2(1-6), 1970: 3(1-6), 1971: 4(1-6), 1972: 5(1-6), 1973: 6(1-6), 1974: 7(1-6), 1975: 8(1-6), 1976: 9(1-6), 1977: 10(1-6), 1978: 11(1-6), 1979: 12(1-6), 1980: 13(1-6), 1981: 14(1-6), 1982: 15(1-6), 1983: 16(1-6), 1984: 17(1-6), 1985: 18(1-6), 1986: 19(1-6), 1987: 20(1-6), 1988: 21(1-6), 1989: 22(1-6), 1990: 23(1-6), 1991: 24(1-6), 1992: 25(1-10), 1993: 26(1-10), 1994: 27(1-10), 1995: 28(1-10), 1996: 29(1-10), 1997: 30(1-10), 1998: 31(1-10), 1999: 32(1-10), 2000: 33(1-10), 2001: 34(1-10), 2002: 35(1-10), 2003: 36(1-10), 2004: 37(1-10), 2005: 38(1-10), 2006: 39(1-10), 2007: 40(1-10), 2008: 41(1-10), 2009: 42(1-10), 2010: 43(1-10), 2011: 44(1-10), 2012: 45(1-12), 2013: 46(1-12), 2014: 47(1-12), 2015: 48(4-12), 2016: 49(1-12), 2017: 50(1-6), 2018: 51(1-6), 2019: 52(1-6), 2020: 53(1-6), 2021: 54(1-6), 2022: 55(1-10), 2023: 56(1-10), 2024: 57(1-10), 2025: 58(1-10), 2025/2026: 59(1-2)
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LOCKSS Archive
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In Progress
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2026-02-09
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45, 52
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LOCKSS Archive
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Preserved
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2026-02-09
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46 to 51
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Library of Congress
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Preserved
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2025-04-07
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50 (1, 2, 5, 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 10); 56 (1 to 10); 57 (1 to 9); 58 (1)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 3 (Suppl 1, 1 to 9); 4 (1 to 9); 5 (1 to 6); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 9); 38 (1 to 9); 39 (1 to 9); 41 (1 to 9); 42 (1 to 9); 43 (Suppl 1, 1, 3 to 9); 44 (1 to 9); 45 (1, 3 to 9, 11, 12); 46 (1, 3 to 9, 11, 12); 47 (1, 3 to 9, 11, 12); 48 (1, 3 to 9, 11, 12); 49 (1, 3 to 9, 11, 12); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 9); 56 (1 to 9); 57 (1 to 9)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 3 (Suppl 1, 1 to 9); 4 (1 to 9); 5 (1 to 6); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 9); 38 (1 to 9); 39 (1 to 9); 41 (1 to 9); 42 (1 to 9); 43 (Suppl 1, 1, 3 to 9); 44 (1 to 9); 45 (1, 3 to 9, 11, 12); 46 (1, 3 to 9, 11, 12); 47 (1, 3 to 9, 11, 12); 48 (1, 3 to 9, 11, 12); 49 (1, 3 to 9, 11, 12); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 9); 56 (1 to 9); 57 (1 to 9)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 31 (9); 36 (1); 39 (3, 6, 7, 9); 40 (2, 4, 5, 7-10); 41 (1-3, 5-8, 10); 42 (1-9); 43 (supplement-1, 1-2, 3-10); 44 (1-10); 45 (1-2, 3-12); 46 (1-2, 3-11); 47 (1-2, 3, 5-8, 11, 12); 48 (1-2, 3-6, 8-12); 49 (1-2, 3-12); 50 (1-6); 51 (1-4, 6); 52 (1-5)
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