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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 8); 33 (, 1 to 5, 6-7, 8 to 10); 34 (, 1 to 10); 35 (, 1 to 10); 36 (, 1-2, 3, 5 to 10); 37 (, 1 to 10); 38 (, 1 to 10); 39 (, 1 to 10); 40 (, 1 to 12); 41 (, 1 to 3, 4-5, 6 to 12); 42 (, 1 to 12); 43 (, 1 to 7, 8-9, 10 to 12); 44 (, 1 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 6, 8 to 14); 48 (, 1 to 14); 49 (, 1 to 14); 50 (, 1 to 14); 51 (, 1 to 14); 52 (, 1 to 12, 13-14); 53 (, 1, 2, 3-4, 5 to 9, 10-11, 12 to 14); 54 (, 1, 2, 3-4, 5 to 14); 55 (, 1 to 14); 56 (, 1 to 14); 57 (, 1 to 4, 6 to 14); 58 (, 1 to 9); 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 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; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 47
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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, 50 to 58
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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, 58
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Portico
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Preserved
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2026-02-12
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Preserved : 1968/1969: 1(1-4), 1969/1970: 2(1-4), 1970/1971: 3(1-4), 1971/1972: 4(1-4), 1972/1973: 5(1-4), 1973/1974: 6(1-4), 1974/1975: 7(1-4), 1975/1976: 8(1-4), 1976/1977: 9(1-4), 1977/1978: 10(1-4), 1978/1979: 11(1-4), 1979/1980: 12(1-4), 1980/1981: 13(1-4), 1981/1982: 14(1-4), 1982/1983: 15(1-4), 1983/1984: 16(1-4), 1984/1985: 17(1-4), 1985/1986: 18(1-4), 1986/1987: 19(1-4), 1987/1988: 20(1-4), 1988/1989: 21(1-4), 1989/1990: 22(1-4), 1990/1991: 23(1-4), 1991/1992: 24(1-4), 1992/1993: 25(1-4), 1993/1994: 26(1-4), 1994/1995: 27(1-4), 1995/1996: 28(1-4), 1996: 29(1-6), 1997: 30(1-6), 1998: 31(1-6), 1999: 32(1-8), 2000: 33(1-10), 2001: 34(1-10), 2002: 35(1-10), 2003: 36(1-10), 2004: 37(1-10), 2005: 38(1-10), 2006: 39(1-10), 2007: 40(1-12), 2008: 41(1-12), 2009: 42(1-12), 2010: 43(1-12), 2011: 44(1-12), 2012: 45(1-12), 2013: 46(1-12), 2014: 47(1-14), 2015: 48(1-4, 6-14), 2016: 49(1-14), 2017: 50(1-14), 2018: 51(1-14), 2019: 52(1-14), 2020: 53(1-14), 2021: 54(6, 9-14), 2022: 55(1-14), 2023: 56(1-9, 11-14), 2024: 57(1-14), 2025: 58(1-14), 2026: 59(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 57
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CLOCKSS Archive
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Preserved
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2026-02-09
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38 to 49
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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 8-9, 10 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 14); 48 (1 to 14); 49 (1 to 14); 50 (1 to 14); 51 (1 to 14); 52 (1 to 13-14); 53 (1 to 3-4, 5 to 10-11, 12 to 14); 54 (1 to 3-4, 5 to 14); 55 (1 to 14); 56 (1 to 14); 57 (1 to 12, 14); 58 (1, 5)
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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, 4); 2 (1-4); 3 (1, 3); 4 (1-3); 5 (1, 2); 13 (4); 14 (3, 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 (1-6); 30 (1-6); 31 (1-6); 32 (1-8); 33 (1-5, 6-7, 8-10); 34 (1-10); 35 (1-10); 36 (1-2, 3-10); 37 (1-10); 38 (1-10); 39 (1-10); 40 (1-12); 41 (1-3, 4-5, 6-12); 42 (1, 3-12); 43 (1-7, 8-9, 10-12); 44 (1, 2, 4-9); 45 (1-12); 46 (1-12); 47 (1-3, 5-14); 48 (1-12, 14); 49 (1-14); 50 (1-14); 51 (1-8, 10, 11, 13, 14); 52 (1-12, 13-14)
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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 14), 48 (1 to 14), 49 (1 to 14), 50 (1 to 14), 51 (1 to 13)
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