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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 31 (1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 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); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1, 2, 3-4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 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
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 54
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Portico
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Preserved
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2026-02-12
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Preserved : 1967: 1(1), 1968: 2(1), 1969: 3(1), 1970: 4(1), 1971: 5(1), 1972: 6(1), 1973: 7(1), 1974: 8(1), 1975: 9(1), 1976: 10(1), 1977: 11(1), 1978: 12(1), 1979: 13(1), 1980: 14(1), 1981: 15(1-2), 1982: 16(1-2), 1983: 17(1-2), 1984: 18(1-2), 1985: 19(1-2), 1986: 20(1-2), 1987: 21(1-2), 1988: 22(1-2), 1989: 23(1-2), 1990: 24(1-4), 1991: 25(1-4), 1992: 26(1-4), 1993: 27(1-4), 1994: 28(1-4), 1995: 29(1-4), 1996: 30(1-4), 1997: 31(1-4), 1998: 32(1-4), 1999: 33(1-4), 2000: 34(1-4), 2001: 35(1-4), 2002: 36(1-4), 2003: 37(1-4), 2004: 38(1-4), 2005: 39(1-4), 2006: 40(1-4), 2007: 41(1-4), 2008: 42(1-4), 2009: 43(1-4), 2010: 44(1-4), 2011: 45(1-4), 2012: 46(1-4), 2013: 47(1-4), 2014: 48(1-4), 2015: 49(1-4), 2016: 50(1-4), 2017: 51(1-4), 2018: 52(1-4), 2019: 53(1-4), 2020: 54(1-4), 2021: 55(1-4), 2022: 56(1-4), 2023: 57(1-4), 2024: 58(1-3), 2025: 59(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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31 to 59
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Library of Congress
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Preserved
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2025-04-07
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52 (1 to 4); 53 (1 to 3-4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 3)
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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 : 52 (1 to 4); 53 (1, 2, 3-4); 54 (1 to 4); 58 (1 to 3)
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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 : 52 (1 to 4); 53 (1, 2, 3-4); 54 (1 to 4); 58 (1 to 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 : 31 (2-4); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (1-4); 51 (1-4); 52 (1-4); 53 (1, 2)
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