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Internet Archive
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Preserved
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2026-07-13
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1 to 15
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Scholars Portal
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Preserved
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2026-06-02
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Preserved : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 4, 5-6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1, 2-3, 4-5, 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1, 2, 4 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1, 3-4, 5-6); 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 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (Suppl, 1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4)
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Portico
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Preserved
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2026-07-16
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Preserved : 1959: 1(1-4), 1960: 2(1-4), 1961: 3(1-4), 1962: 4(1-4), 1963: 5(1-4), 1964: 6(1-4), 1965: 7(1-6), 1966: 8(1-6), 1967: 9(1-6), 1968: 10(1-6), 1969: 11(1-6), 1970: 12(1-6), 1971: 13(1-6), 1972: 14(1-6), 1973: 15(1-6), 1974: 16(1-6), 1975: 17(1-6), 1976: 18(1-6), 1977: 19(1-6), 1978: 20(1-6), 1979: 21(1-6), 1980: 22(1-6), 1981: 23(1-6), 1982: 24(1-6), 1983: 25(1-6), 1984: 26(1-6), 1985: 27(1-6), 1986: 28(1-6), 1987: 29(1-6), 1988: 30(1-6), 1989: 31(1-2, 4-6), 1990: 32(1-6), 1991: 33(1-6), 1992: 34(1-2, S 1, 3-6), 1993: 35(1-4), 1994: 36(1, S 1, 2-4), 1995: 37(1-4), 1996: 38(1-4), 1997: 39(1-4), 1997: 40(1-4), 1998: 41(1-4), 1999: 42(1-4), 2000: 43(1-4), 2001: 44(1-4), 2002: 45(1-4), 2003: 46(1-4), 2003: 47(1-4), 2004: 48(1-4), 2005: 49(1, S 1, 2-4), 2006: 50(1-4), 2007: 51(1-4), 2008: 52(1-4), 2009: 53(1-4), 2010: 54(1-4), 2011: 55(1-4), 2012: 56(1-4), 2013: 57(1-4), 2014: 58(1-4), 2015: 59(2-4), 2016: 60(1-4), 2017: 61(1-4), 2018: 62(1-4)
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CLOCKSS Archive
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Preserved
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2026-07-06
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39, 41, 42, 46 to 62
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LOCKSS Archive
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In Progress
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2026-07-06
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56
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LOCKSS Archive
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Preserved
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2026-07-06
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57 to 62
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Library of Congress
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Preserved
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2025-04-07
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60 (4); 61 (1); 62 (1 to 4)
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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 4); 5 (1 to 4); 6 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4)
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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 4); 5 (1 to 4); 6 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4)
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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 : 13 (2); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (2-4); 51 (1, 3, 4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 585 (C)
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