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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 32 (1 to 3); 33 (, 1 to 3); 34 (, 1 to 3); 35 (, 1 to 3); 36 (, 1 to 3); 37 (, 1 to 3); 38 (, 1 to 3); 39 (, 1 to 3); 40 (, 1 to 3); 41 (, 1 to 3); 42 (, 1 to 3); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 3); 46 (, 1 to 3); 47 (, 1 to 3); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 2 to 4); 53 (, 1 to 4); 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 35(1-3), 2003: 36(1-3), 2004: 37(1-3), 2005: 38(1-3), 2006: 39(1-3), 2007: 40(1-3), 2008: 41(1-3), 2009: 42(1-3), 2010: 43(1-3)
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Internet Archive
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Preserved
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2025-08-08
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10 to 19
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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 32, 34, 35
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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 37, 39, 50 to 53
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 1(1-4), 1969: 2(1-4), 1970: 3(1-4), 1971: 4(1-4), 1972: 5(1-4), 1973: 6(1-4), 1974: 7(1-4), 1975: 8(1-4), 1976: 9(1-4), 1977: 10(1-4), 1978: 11(1-4), 1979: 12(1-4), 1980: 13(1-4), 1981: 14(1-3), 1982: 15(1-4), 1983: 16(1-4), 1984: 17(1-4), 1985: 18(1-4), 1986: 19(1-4), 1987: 20(1-4), 1988: 21(1-4), 1989: 22(1-4), 1990: 23(1-4), 1991: 24(1-3), 1992: 25(1-3), 1993: 26(1-3), 1994: 27(1-3), 1995: 28(1, 1, S, 2-3), 1996: 29(1-3), 1997: 30(1-3), 1998: 31(1-3), 1999: 32(1-3), 2000: 33(1-3), 2001: 34(1-3), 2002: 35(1-3), 2003: 36(1-3), 2004: 37(1, 1, S, 2-3), 2005: 38(1-3), 2006: 39(1-3), 2007: 40(1-3), 2008: 41(1-3), 2009: 42(1-3), 2010: 43(1-3), 2011: 44(1-3), 2012: 45(1-3), 2013: 46(1-3), 2014: 47(1-3), 2015: 48(1-4), 2016: 49(1-4), 2017: 50(1-4), 2018: 51(1-4), 2019: 52(1-4), 2020: 53(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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33, 36 to 53
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CLOCKSS Archive
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Preserved
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2026-02-09
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38, 40 to 49
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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 (4); 2; 3 (2, 4); 4; 5; 6; 7; 9; 10; 11 (2, 4); 12; 13 (2-4); 15; 16; 17; 18 (2, 3); 19 (4); 20 (1-3); 21 (1-3); 22 (1, 2, 4); 24 (1); 25; 27; 28; 33 (3); 34 (2); 37 (1_suppl); 39; 44 (2); 45 (1); 46 (2, 3); 47 (1-3); 48 (1-4); 49 (1-4); 50 (1, 3, 4); 51 (1-4); 52 (2)
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Library of Congress
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Preserved
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2025-04-07
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43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 55 (2, 3); 56 (1)
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British Library
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Preserved
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2019-09-18
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Preserved : 47 (1 to 3), 48 (1 to 4), 49 (1 to 4), 50 (1 to 4), 51 (1 to 3)
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