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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 10 (2, 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 3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 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 to 6); 55 (1 to 8); 56 (1 to 8); 57 (1 to 12); 58 (1, 3 to 12); 59 (1 to 14); 60 (1 to 12, 14); 61 (1 to 11, 13, 14, 16); 62 (1 to 16); 63 (1 to 14, 15-16); 64 (1, 2-3, 4, 5, 6-7, 8, 9, 10-11, 12, 13-14, 15, 16); 65 (1, 2-3, 4, 5, 6-7, 8, 9, 10-11, 12, 13-14, 15, 16); 66 (1, 2-3, 4, 5, 6-7, 8, 9, 10-11, 12, 13-14, 15, 16); 67 (1, 2-3, 4, 5, 6-7, 8, 9, 10-11, 12, 13-14, 15, 16); 68 (1, 4, 5, 6-7, 8, 9, 10-11, 12, 13-14, 15, 16); 69 (1, 2-3, 4, 5, 6-7, 8, 9, 10-11, 12, 13-14, 15, 16); 70 (1, 2-3, 4, 5)
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Internet Archive
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Preserved
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2025-08-08
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1 to 58
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Portico
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Preserved
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2026-04-09
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Preserved : 1966: 10(1-3), 1967: 11(1-3), 1968: 12(1-3), 1969: 13(1-3), 1970: 14(1-3), 1971: 15(1-3), 1972: 16(1-3), 1973: 17(1-3), 1974: 18(1-3), 1975: 19(1-3), 1976: 20(1-3), 1977: 21(1-3), 1978: 22(1-3), 1979: 23(1-3), 1980: 24(1-3), 1981: 25(1-3), 1982: 26(1-3), 1983: 27(1-3), 1984: 28(1-3), 1985: 29(1-3), 1986: 30(1-3), 1987: 31(1-3), 1988: 32(1-3), 1989: 33(1-3), 1990: 34(1-3), 1991: 35(1-4), 1992: 36(1-4), 1993: 37(1-4), 1994: 38(1-4), 1995: 39(1-4), 1996: 40(1-4), 1997: 41(1-4), 1998: 42(1-4), 1999: 43(1-4), 2000: 44(1-6), 2001: 45(1-6), 2002: 46(1-6), 2003: 47(1-6), 2004: 48(1-6), 2005: 49(1-6), 2006: 50(1-6), 2007: 51(1-6), 2008: 52(1-6), 2009: 53(1-6), 2010: 54(1-6), 2011: 55(1-8), 2012: 56(1-8), 2013: 57(1-12), 2014: 58(1-12), 2015: 59(1-14), 2016: 60(1-16), 2017: 61(1-16), 2018: 62(1-16), 2019: 63(1-16), 2020: 64(1-16), 2021: 65(1-7, 9-16), 2022: 66(1-16), 2023: 67(1-16), 2024: 68(1-16), 2025: 69(1-16), 2026: 70(1-7)
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CLOCKSS Archive
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In Progress
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2026-04-06
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16 to 50, 60 to 70
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LOCKSS Archive
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In Progress
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2026-04-06
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16 to 46, 69, 70
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LOCKSS Archive
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Preserved
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2026-04-06
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47 to 68
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CLOCKSS Archive
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Preserved
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2026-04-06
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51 to 59
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Library of Congress
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Preserved
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2025-04-07
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54 (1 to 6); 55 (1 to 8); 56 (1 to 8); 57 (1 to 12); 58 (1 to 12); 59 (1 to 14); 60 (1 to 16); 61 (1 to 16); 62 (1 to 16); 63 (1 to 15-16); 64 (1, 2-3, 4 to 6-7, 8 to 10-11, 12, 13-14, 15, 16); 65 (1, 2-3, 4 to 6-7, 8 to 10-11, 12, 13-14, 15, 16); 66 (1, 2-3, 4 to 6-7, 8 to 10-11, 12, 13-14, 15, 16); 67 (1, 2-3, 4 to 6-7, 8 to 10-11, 12, 13-14, 15, 16); 68 (1, 2-3, 4 to 6-7, 8 to 10-11, 12, 13-14, 15, 16)
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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 : 10 (2, 3); 11 (1-3); 12 (1-3); 13 (1-3); 14 (1-3); 15 (1-3); 16 (1-3); 17 (1-3); 18 (1-3); 19 (1-3); 20 (1-3); 21 (1-3); 22 (1-3); 23 (1-3); 24; 25 (1-3); 26 (1-3); 27 (1-3); 28 (1-3); 29 (1-3); 30 (1-3); 31 (1-3); 32 (1-3); 33 (1-3); 34 (1-3); 35 (1-4); 36 (1-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-6); 45 (1, 2, 4-6); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-3, 5, 6); 52 (1-6); 53 (2-6); 54 (1-6); 55 (1-6); 56 (1-8); 57 (1-12); 58 (1-12); 59 (2-4, 6-8, 12, 14); 60 (1-7, 9-14, 16); 61 (1-3, 5-16); 62 (1-16); 63 (1-14, 15-16)
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