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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 44 (1 to 6); 45 (, 1_suppl, 2 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 3); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1 to 4); 69 (, 1 to 4); 70 (, 1, 2); 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 : 2011: 56(2-4), 2012: 57(1-4), 2013: 58(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1956: 1(1-12), 1957: 2(1-12), 1958: 3(1-12), 1959: 4(1-12), 1960: 5(1-12), 1961: 6(1-12), 1962: 7(1-12), 1963: 8(1-12), 1964: 9(1-12), 1965: 10(1-12), 1966: 11(1-12), 1967: 12(1-12), 1968: 13(1-12), 1969: 14(1-12), 1970: 15(1-12), 1971: 16(1-12), 1972: 17(1-12), 1973: 18(1, 1, S, 2-6), 1974: 19(1, 1, S, 2-6), 1975: 20(1, 1, S, 2-6), 1976: 21(1-4), 1977: 22(1, 1, S, 2-4), 1978: 23(1-4), 1979: 24(1-4), 1980: 25(1-4), 1981: 26(1, 1, S, 2-4), 1982: 27(1, 1, S, 2-4), 1983: 28(1-4), 1984: 29(1-4), 1985: 30(1-4), 1986: 31(1-2, 4), 1987: 32(1-6), 1988: 33(1-6), 1989: 34(1-6), 1990: 35(1-6), 1991: 36(1-6), 1992: 37(1-6), 1993: 38(1, 1, S, 2-6), 1994: 39(1-6), 1995: 40(1-6), 1996: 41(1-6), 1997: 42(1-6), 1998: 43(1-6), 1999: 44(1-6), 2000: 45(1, 1, S, 2-6), 2001: 46(1-6), 2002: 47(1-6), 2003: 48(1-4), 2004: 49(1-4), 2005: 50(1-4), 2006: 51(1-4), 2007: 52(1-4), 2008: 53(1-4), 2009: 54(1-4), 2010: 55(1-3), 2011: 56(1-4), 2012: 57(1-4), 2013: 58(1-4), 2014: 59(1-4), 2015: 60(1-4), 2016: 61(1-4), 2017: 62(1-4), 2018: 63(1-4), 2019: 64(1-4), 2020: 65(1-4), 2021: 66(1, 3-4), 2022: 67(1-4), 2023: 68(1-4), 2024: 69(1-4), 2025: 70(1-4)
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CLOCKSS Archive
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In Progress
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2026-02-09
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45 to 57, 61 to 70
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LOCKSS Archive
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In Progress
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2026-02-09
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45 to 48, 70
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LOCKSS Archive
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Preserved
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2026-02-09
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49 to 69
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CLOCKSS Archive
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Preserved
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2026-02-09
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58 to 60
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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 : ; 5 (1 to 4); 6 (1 to 4); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 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 3); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (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 : 3 (11); 5 (6); 6 (3); 7 (5); 8 (1, 8); 9 (1); 11 (10, 12); 13 (8, 11); 17 (5); 21 (1); 22; 25 (4); 28 (1); 30; 33 (3, 5); 37 (2); 38 (1); 39 (6); 41 (4); 44 (6); 45; 46 (5, 6); 47 (1, 6); 51 (1-4); 53 (1-4); 54 (3); 55 (1, 3); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (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 : 59 (1 to 4), 60 (1 to 4), 61 (1 to 4), 62 (1 to 4), 63 (1 to 3)
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