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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 27 (1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1_suppl, 2 to 6); 35 (, 1_suppl, 2 to 6); 36 (, 1 to 6); 37 (, 1_suppl, 2 to 6); 38 (, 1 to 6); 39 (, 1_suppl, 2 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1_suppl, 2 to 6); 44 (, 1_suppl, 2 to 6); 45 (, 1_suppl, 2 to 6); 46 (, 1_suppl, 2 to 6); 47 (, 1, 2 to 4 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1_suppl, 3 to 6); 51 (, 1_suppl, 2 to 6); 52 (, 1_suppl, 2 to 6); 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; 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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19 to 28
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Portico
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Preserved
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2026-02-12
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Preserved : 1972/1973: 1(1-6), 1974: 2(1-4), 1975: 3(1-4), 1976: 4(1-4), 1977: 5(1-4), 1978: 6(1-4), 1979: 7(1-4), 1980: 8(1-4), 1981: 9(1-4), 1982: 10(1-4), 1983: 11(1-4), 1984: 12(1-4), 1985: 13(1-4), 1986: 14(1-4), 1987: 15(1-4), 1988: 16(1-4), 1989: 17(1-4), 1990: 18(1-4), 1991: 19(1-4), 1992: 20(1-4), 1993: 21(1-6), 1994: 22(1-6), 1995: 23(1-6), 1996: 24(1-6), 1997: 25(1-6), 1998: 26(1-6), 1999: 27(1-6), 2000: 28(1-6), 2001: 29(1-6), 2002: 30(1-6), 2003: 31(1-6), 2004: 32(1-6), 2005: 33(1, 1, S, 2-6), 2006: 34(1, 1, S, 2-6), 2007: 35(1, 1, S, 2-6), 2008: 36(1, 1, S, 2-6), 2009: 37(1, 1, S, 2-6), 2010: 38(1, 1, S, 2-6), 2011: 39(1, 1, S, 2-6), 2012: 40(1, 1, S, 2-6), 2013: 41(1, 1, S, 2-6), 2014: 42(1, 1, S, 2-6), 2015: 43(1, 1, S, 2-6), 2016: 44(1, 1, S, 2-6), 2017: 45(1, 1, S, 2-6), 2018: 46(1, 1, S, 2-6), 2019: 47(1, 1, S, 2, 2, S, 3, 3, S, 4-6), 2020: 48(1, 1, S, 2, 2, S, 3, 3, S, 4)
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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 32, 34, 47 to 53
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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 27, 29, 30, 53
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LOCKSS Archive
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Preserved
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2026-02-09
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28, 31 to 52
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CLOCKSS Archive
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Preserved
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2026-02-09
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33, 35 to 46
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Portico
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Preserved
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2026-02-12
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Preserved : 2021: 49(1, S, 2, S, 3-6), 2022: 50(1, S, 1-2, 2, S, 3-6), 2023: 51(1, 1, S, 2, 2, S, 3, 3, S, 4-6), 2024: 52(1, 1, S, 2-6), 2025: 53(1, 1, S, 2, 2, S, 3, 3, S, 4, 4, S, 5, 5, S, 6), 2026: 54(1)
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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 (1-6); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1-6); 46 (1, 3, 5, 6); 47 (1, 3, 4); 166 (5)
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