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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 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, 2, 3-4); 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 4); 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 (, 2 to 4); 63 (, 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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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 42, 44, 55 to 57, 59 to 63
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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 40, 63
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Portico
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Preserved
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2026-02-12
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Preserved : 1962: 1(1), 1963: 2(1), 1964: 3(1), 1965: 4(1), 1966: 5(1), 1967: 6(1), 1968: 7(1), 1969: 8(1), 1970: 9(1), 1971: 10(1), 1973: 11(1-4), 1974: 12(1-4), 1975: 13(1-4), 1976: 14(1-4), 1977: 15(1-4), 1978: 16(1-4), 1979: 17(1-4), 1980: 18(1-4), 1981: 19(1-4), 1982: 20(1-4), 1983: 21(1-4), 1984: 22(1-4), 1985: 23(1-4), 1986: 24(1-4), 1987: 25(1-4), 1988: 26(1-4), 1989: 27(1-4), 1990: 28(1-4), 1991: 29(1-4), 1992: 30(1-4), 1993: 31(1-4), 1994: 32(1-4), 1995: 33(1-4), 1996: 34(1-4), 1997: 35(1-4), 1998: 36(1-4), 1999: 37(1-4), 2000: 38(1-4), 2001: 39(1-4), 2002: 40(1-4), 2003: 41(1-4), 2004: 42(1-4), 2005: 43(1-4), 2006: 44(1-4), 2007: 45(1-4), 2008: 46(1-4), 2009: 47(1-4), 2010: 48(1-4), 2011: 49(1-4), 2012: 50(1-4), 2013: 51(1-4), 2014: 52(1-4), 2015: 53(1-4), 2016: 54(1-4), 2017: 55(1-4), 2018: 56(1-4), 2019: 57(1-4), 2020: 58(1-4), 2021: 59(1-4), 2022: 60(1-4), 2023: 61(1-4), 2024: 62(1-4), 2025: 63(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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41 to 62
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CLOCKSS Archive
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Preserved
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2026-02-09
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43, 45 to 54, 58
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Library of Congress
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Preserved
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2025-04-07
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48 (1 to 3-4); 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 4); 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 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 : 1 (1); 2; 3; 4; 5; 6; 7; 8; 9; 10; 11 (2-4); 12 (1-4); 13 (1-4); 14 (2-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 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, 2, 3-4); 49 (1-4); 50 (1-4); 51 (1-4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-3)
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British Library
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Preserved
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2019-09-18
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Preserved : 52 (1 to 4), 53 (1 to 4), 54 (1 to 4), 55 (1 to 4), 56 (1 to 3)
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