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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 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_suppl, 2 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1_suppl, 2 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 65 (, 1 to 3); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1960/1961: 1(1-4), 1961/1962: 2(1-4), 1963: 3(1), 1964: 4(1-4), 1965: 5(1-4), 1966: 6(1-4), 1967: 7(1-4), 1968: 8(1-4), 1969: 9(1-4), 1970: 10(1-4), 1971: 11(1-4), 1972: 12(1-4), 1973: 13(1-4), 1974: 14(1-4), 1975: 15(1-4), 1976: 16(1-4), 1977: 17(1-4), 1978: 18(1-4), 1979: 19(1-4), 1980: 20(1-4), 1981: 21(1-4), 1982: 22(1-4), 1983: 23(1-4), 1984: 24(1-4), 1985: 25(1-4), 1986: 26(1-4), 1987: 27(1-4), 1988: 28(1-4), 1989: 29(1-4), 1990: 30(1-4), 1991: 31(1-4), 1992: 32(1-4), 1993: 33(1-4), 1994: 34(1-4), 1995: 35(1-4), 1996: 36(1-4), 1997: 37(1-4), 1998: 38(1-4), 1999: 39(1-4), 2000: 40(1-4), 2001: 41(1-4), 2002: 42(1-4), 2003: 43(1-4), 2004: 44(1-4), 2005: 45(1-4), 2006: 46(1-4), 2007: 47(1-4), 2008: 48(1-4), 2009: 49(1-4), 2010: 50(1-4), 2011: 51(1, 1, S, 2-4), 2012: 52(1-4), 2013: 53(1-4), 2014: 54(1-4), 2015: 55(1-4), 2016: 56(1-4), 2017: 57(1-4), 2018: 58(1-4), 2019: 59(1-4), 2020: 60(1-4), 2021: 61(1, 1, S, 2-4), 2022: 62(1-4), 2023: 63(1-4), 2024: 64(1-4), 2025: 65(1-4), 2026: 66(1)
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CLOCKSS Archive
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In Progress
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2026-02-09
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40 to 52, 56 to 65
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LOCKSS Archive
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In Progress
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2026-02-09
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40 to 42, 65
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LOCKSS Archive
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Preserved
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2026-02-09
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43 to 64
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CLOCKSS Archive
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Preserved
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2026-02-09
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53 to 55
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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 : ; 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 39 (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); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4)
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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 to 4); 51 (1 to 4); 52 (1 to 4); 53 (3, 4); 54 (1 to 4); 55 (1); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1_suppl, 1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4)
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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 (3); 2 (4); 5 (1); 9 (4); 13 (1); 19 (4); 26; 31 (2, 4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1-4); 51 (1_suppl, 3); 53 (1, 2, 4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4)
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British Library
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Preserved
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2019-09-18
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Preserved : 54 (1 to 4), 55 (1 to 4), 56 (1 to 4), 57 (1 to 4), 58 (1 to 4)
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