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Internet Archive
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Preserved
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2025-08-08
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58 to 65
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Portico
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Preserved
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2026-02-12
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Preserved : 1944: 1(1, 3), 1945: 2(1-4), 1946: 3(1-4), 1947: 4(1-6), 1948: 5(1-6), 1949: 6(1-6), 1950: 7(1-6), 1951: 8(1-6), 1952: 9(1-6), 1953: 10(1-6), 1954: 11(1-6), 1955: 12(1-6), 1956: 13(1-6), 1957: 14(1-6), 1958: 15(1-6), 1959: 16(1-6), 1960: 17(1-6), 1961: 18(1-6), 1962: 19(1-6), 1963: 20(1-6), 1964: 21(1-6), 1965: 22(1-6), 1966: 23(1-6), 1967: 24(1-6), 1968: 25(1-6), 1969: 26(1-6), 1970: 27(1-8), 1971: 28(1-8), 1972: 29(1-8), 1973: 30(1-8), 1974: 31(1-8), 1975: 32(1-12), 1976: 33(1-12), 1977: 34(1-12), 1978: 35(1-12), 1979: 36(1-12), 1980: 37(1-12), 1981: 38(1-12), 1982: 39(1-12), 1983: 40(1-12), 1984: 41(1-24), 1985: 42(1-24), 1986: 43(1-24), 1987: 44(1-24), 1988: 45(1-24), 1989: 46(1-24), 1990: 47(1-24), 1991: 48(1-24), 1992: 49(1-24), 1993: 50(1-24), 1994: 51(1-24), 1995: 52(1-24), 1996: 53(1-24), 1997: 54(1-24), 1998: 55(1-24), 1999: 56(1-24), 2000: 57(1-24), 2001: 58(1-24), 2002: 59(1-24), 2003: 60(1-24), 2004: 61(1-24), 2005: 62(1-12), 2006: 63(1-12), 2007: 64(1-12), 2008: 65(1-12), 2009: 66(1-12), 2010: 67(1-12), 2011: 68(1-12), 2012: 69(1-12), 2013: 70(1-12), 2014: 71(1-12), 2015: 72(1-12), 2015/2016: 73(1-12), 2017: 74(1-12), 2018: 75(1-12), 2019: 76(1-12), 2020: 77(1-12), 2021: 78(1-12), 2022: 79(1-12), 2023: 80(1-12), 2024: 81(1-3)
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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 4, 6 to 17, 60, 82
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LOCKSS Archive
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Preserved
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2026-02-09
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5, 18 to 59, 61 to 81
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CLOCKSS Archive
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In Progress
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2026-02-09
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69 to 73, 77 to 82
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CLOCKSS Archive
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Preserved
|
2026-02-09
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74 to 76
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Portico
|
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Preserved
|
2026-02-12
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Preserved : 2025: 82(5-12)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : preprint (216)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : preprint (215, 216); ; 25 (4); 26; 28 (6); 29; 36 (1); 46 (5); 69 (9); 71 (11, 12); 72 (6, 9, 11, 12); 73 (1 to 9, 11, 12); 74 (1 to 5, 7 to 9, 11, 12); 75 (1 to 9, 11, 12); 76 (1 to 7, 9, 11); 77 (1 to 6, 8, 9, 11, 12); 78 (1, 4, 11, 12); 79 (1 to 9)
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