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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12 (1, 2, 3-4); 13 (, 1 to 4); 14 (, 1-2, 3, 4); 15 (, 1 to 4); 16 (, 1-2, 3, 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 (, 1-2, 3, 4); 25 (, 1-2, 3-4); 26 (, 1 to 4); 27 (, 1, 2-4); 28 (, 1-4); 29 (, 1-2, 3-4); 30 (, 1-2, 3-4); 31 (, 1-2, 3, 4); 32 (, 1-2, 3-4); 33 (, 1, 2-4); 34 (, 1, 2-4); 35 (, 1, 2-4); 36 (, 1-2, 3, 4); 37 (, 1, 2-3, 4); 38 (, 1-4); 39 (, 1, 2, 3-4); 40 (, 1-2, 3, 4); 41 (, 1-2, 3, 4); 42 (, 1-2, 3, 4); 43 (, 1-2, 3, 4); 45; 47; 49; 50; 51; 52; 53; 54; 55; 56; 57; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72; 73; 74; 75; 76; 77; 78; 1964; 1965; 1967; 1971; 1972; 1973; 1975; 1976; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1993; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 45, 47, 49 to 81
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Portico
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Preserved
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2026-02-12
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Preserved : 1964: 1(C), 1965: 2(C), 1967: 3(C), 1967: 4(C), 1971: 5(C), 1971: 6(C), 1972: 7(C), 1973: 8(C), 1975: 9(C), 1975/1976: 10(Part 1, Part 2, Part 3, Part 4, Index), 1976: 11(Part 1, Part 2, Part 3, Part 4, ), 1978/1979: 12(1-4), 1980/1981: 13(1-4), 1982: 14(1-4), 1983/1984: 15(1-4), 1985: 16(1-4), 1986/1987: 17(1-4), 1988: 18(1-4), 1989: 19(1-4), 1990: 20(1-4), 1991: 21(1-4), 1993: 22(1-4), 1995: 23(1-4), 1996: 24(1-4), 1997: 25(1-4), 1998: 26(1-4), 1999: 27(1-4), 2000: 28(1-4), 2001: 29(1-4), 2002: 30(1-4), 2003: 31(1-4), 2004: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2007: 35(1-4), 2008: 36(1-4), 2009: 37(1-4), 2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2015: 43(1-4), 2016: 44(1-4), 2017: 45-46, 2017: 47-48, 2018: 49, 2018: 50, 2018: 51, 2018: 52, 2019: 53, 2019: 54, 2019: 55, 2019: 56, 2020: 57, 2020: 58, 2020: 59, 2020: 60, 2021: 61, 2021: 62, 2021: 63, 2021: 64, 2022: 65, 2022: 66, 2022: 67, 2022: 68, 2023: 69, 2023: 70, 2023: 71, 2023: 72, 2024: 73, 2024: 74, 2024: 75, 2024: 76, 2025: 77, 2025: 78, 2025: 79, 2025: 80, 2026: 81
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Internet Archive
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Preserved
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2025-08-08
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1 to 32
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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; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12 (1, 2, 3-4); 13 (2-4); 14 (1-2, 3); 15 (1-4); 16 (1-2, 3); 17 (1-3); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-3); 22 (2-4); 23 (1, 2); 24 (1-2, 3, 4); 25 (1-2, 3-4); 26 (1-4); 27 (1, 2-4); 28 (1-4); 29 (3-4); 30 (1-2, 3-4); 31 (1-2, 3, 4); 32 (1-2, 3-4); 33 (1, 2-4); 34 (1, 2-4); 35 (1, 2-4); 36 (1-2, 3, 4); 37 (1, 2-3, 4); 38 (1-4); 39 (2, 3-4); 40 (1-2, 3, 4); 41 (1-2, 3, 4); 42 (1-2, 3, 4); 43 (1-2, 3, 4); 44 (1-4); 45-46 (C); 47-48; 49; 50; 51; 52; 53; 54; 55
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