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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1); 9 (2, 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 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 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 4); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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6 to 31
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Portico
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Preserved
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2026-04-09
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Preserved : 1972/1973: 1(1-2), 1973/1974: 2(1-2), 1974/1975: 3(1-2), 1975/1976: 4(1-2), 1976/1977: 5(1-2), 1977/1978: 6(1-2), 1978/1979: 7(1-2), 1979: 8(1), 1980/1981: 9(1-3), 1982: 10(1-3), 1983: 11(1-3), 1984: 12(1-3), 1985: 13(1-3), 1986: 14(1-3), 1987: 15(1-3), 1988: 16(1-3), 1989: 17(1-4), 1990: 18(1-4), 1991: 19(1-4), 1992: 20(1-4), 1993: 21(1-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1995: 23(1-2)
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Portico
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Preserved
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2026-04-09
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Preserved : 2003: 31(1, 3-4), 2004: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2007: 35(1-4), 2008: 36(1-4), 2009: 37(1-6), 2010: 38(1-6), 2011: 39(1-6), 2012: 40(1-6), 2013: 41(1-6), 2014: 42(1-6), 2015: 43(1-6), 2016: 44(1-6), 2017: 45(1-6), 2018: 46(1-6), 2019: 47(1-6), 2020: 48(1-6), 2021: 49(1-6), 2022: 50(1-6), 2023: 51(1-6), 2024: 52(1-6), 2025: 53(1-6), 2026: 54(1-2)
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LOCKSS Archive
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Preserved
|
2026-04-06
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32 to 53
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CLOCKSS Archive
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In Progress
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2026-04-06
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32, 45 to 54
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CLOCKSS Archive
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Preserved
|
2026-04-06
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33 to 44
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LOCKSS Archive
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In Progress
|
2026-04-06
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54
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Library of Congress
|
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Preserved
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2025-04-07
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38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 6); 42 (4_suppl, 1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 1 (1, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1); 9 (2, 3); 10 (1-3); 11 (1-3); 12 (1-3); 13 (1-3); 14 (1-3); 15 (1-3); 16 (1-3); 17 (1-3); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 23 (1, 2); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1-4); 37 (2-6); 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 (1-6); 47 (1-6)
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