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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1 to 4); 2 (1 to 4); 3 (1, 2, 3-4); 4 (1, 2, 3-4); 5 (1, 2, 3-4); 6 (1, 2, 3-4); 7 (1, 2, 3-4); 8 (1, 2, 3-4); 9 (1, 2, 3-4); 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 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 7); 32 (1 to 7); 33 (1 to 8); 34 (1 to 8); 35 (1 to 8); 36 (1 to 8); 37 (1 to 3 to 8); 38 (1 to 8); 39 (1 to 8); 40 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 12); 47 (1, 2, 3-4, 5 to 12); 48 (1, 2, 3-4, 5 to 12); 49 (1 to 12); 50 (1-2, 3 to 12); 51 (1 to 12); 52 (1 to 12); 53 (1 to 12); 54 (1 to 12); 55 (1 to 12); 56 (1 to 12); 57 (1 to 12); 58 (1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1 to 12); 64 (1 to 12); 65 (1 to 12); 66 (1 to 12); 67 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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39 to 55
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Internet Archive
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Preserved
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2025-08-08
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1 to 38
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Portico
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Preserved
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2026-04-16
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Preserved : 1960: 1(1-4), 1961: 2(1-4), 1962: 3(1-4), 1963: 4(1-4), 1964: 5(1-4), 1965: 6(1-4), 1966: 7(1-4), 1967: 8(1-4), 1968: 9(1-4), 1969: 10(1-4), 1970: 11(1-4), 1971: 12(1-4), 1972: 13(1-4), 1973: 14(1-4), 1974: 15(1-4), 1975: 16(1-4), 1976: 17(1-4), 1977: 18(1-4), 1978: 19(1-4), 1979: 20(1-4), 1980: 21(1-4), 1981: 22(1-4), 1982: 23(1-4), 1983: 24(1-4), 1984: 25(1-4), 1985: 26(1-6), 1986: 27(1-6), 1987: 28(1-6), 1988: 29(1-6), 1989: 30(1-6), 1990: 31(1-7), 1991: 32(1-7), 1992: 33(1-8), 1993: 34(1-8), 1994: 35(1-8), 1995: 36(1-8), 1996: 37(1-8), 1997: 38(1-8), 1998: 39(1-8), 1999: 40(1-8), 2000: 41(1-8), 2001: 42(1-8), 2002: 43(1-8), 2003: 44(1-8), 2004: 45(1-8), 2005: 46(1-12), 2006: 47(1-2, 5-12), 2007: 48(1-2, 5-12), 2008: 49(1-12), 2009: 50(1-12), 2010: 51(1-12), 2011: 52(1-12), 2012: 53(1-12), 2013: 54(1-12), 2014: 55(1-12), 2015: 56(1-12), 2016: 57(1-12), 2017: 58(1-12), 2018: 59(1-12), 2019: 60(1-12), 2020: 61(1-12), 2021: 62(1-12), 2022: 63(1-12), 2023: 64(1-12), 2024: 65(1-12), 2025: 66(1-12), 2026: 67(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-13
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19, 26, 32 to 67
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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 : 47 (1, 2, 3-4, 5-12); 48 (1, 2, 3-4, 5-12)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 4 (1 to 8); 5 (1?2, 3 to 9, 11, 12); 6 (1 to 9, 11, 12); 38 (1 to 8); 39 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 9, 11, 12); 47 (1, 2, 3?4, 5 to 9, 11, 12); 48 (1, 2, 3?4, 5 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (1 to 5, 7 to 9, 11, 12); 66 (1 to 9)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 4 (1 to 8); 5 (1?2, 3 to 9, 11, 12); 6 (1 to 9, 11, 12); 38 (1 to 8); 39 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 9, 11, 12); 47 (1, 2, 3?4, 5 to 9, 11, 12); 48 (1, 2, 3?4, 5 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (1 to 5, 7 to 9, 11, 12); 66 (1 to 9, 11)
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