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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 to 12); 2 (1 to 12); 3 (1 to 12); 4 (1 to 12); 5 (1 to 12); 6 (1 to 12); 7 (1 to 12); 8 (1 to 12); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 6, 7-8, 9-10, 11-12); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (5, 6); 35 (1 to 3, 5, 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1-2, 3 to 6); 40 (1 to 6); 41 (1 to 6); 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 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 60 (1 to 6); 61 (1 to 5)
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Internet Archive
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Preserved
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2025-08-08
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to 13
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Portico
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Preserved
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2026-04-09
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Preserved : 1965: 1(1-12), 1966: 2(1-12), 1967: 3(1-12), 1968: 4(1-12), 1969: 5(1-12), 1970: 6(1-12), 1971: 7(1-12), 1972: 8(1-12), 1973: 9(1-12), 1974: 10(1-12), 1975: 11(1-12), 1976: 12(1-12), 1977: 13(1-12), 1978: 14(1-12), 1979: 15(1-12), 1980: 16(1-12), 1981: 17(1-12), 1982: 18(1-12), 1983: 19(1-12), 1984: 20(1-12), 1985: 21(1-12), 1986: 22(1-12), 1987: 23(1-12), 1988: 24(1-12), 1989: 25(1-12), 1990: 26(1-12), 1991: 27(1-12), 1992: 28(1-12), 1993: 29(1-12), 1994: 30(1-12), 1995: 31(1-6), 1996: 32(1-6), 1997: 33(1-4)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 61
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Portico
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Preserved
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2026-04-09
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Preserved : 1998: 34(6)
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Portico
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Preserved
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2026-04-09
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Preserved : 2000: 36(1-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 2002: 38(4)
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Portico
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Preserved
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2026-04-09
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Preserved : 2005: 41(3), 2006: 42(3-4)
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LOCKSS Archive
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In Progress
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2026-04-06
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48, 55
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Portico
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Preserved
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2026-04-09
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Preserved : 2012/2013: 48(2, 5-6), 2013/2014: 49(1-2, 4-6), 2014/2015: 50(1-6), 2015/2016: 51(1-6), 2016/2017: 52(1-6), 2017/2018: 53(1-6), 2018/2019: 54(1-6), 2019/2020: 55(1-6), 2020/2021: 56(1-6), 2021/2022: 57(1-6), 2022/2023: 58(1-6), 2023/2024: 59(1-6), 2024: 60(1-5), 2025/2026: 61(1-6)
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LOCKSS Archive
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Preserved
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2026-04-06
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49 to 54
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Library of Congress
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Preserved
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2025-04-07
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53 (5, 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 60 (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 6); 5 (1 to 6); 6 (1 to 5); 33 (1 to 6); 34 (5, 6); 35 (1 to 3, 5, 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1, 3 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1, 4 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6)
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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 6); 5 (1 to 6); 6 (1 to 5); 33 (1 to 6); 34 (5, 6); 35 (1 to 3, 5, 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1, 3 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1, 4 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6)
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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 : 46 (1 to 6); 47 (1, 2)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 46 (1 to 6); 47 (1, 2)
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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 : 34 (6); 36 (4-6); 37 (1-6); 38 (1-6); 39 (1, 3-6); 40 (1-6); 41 (1-6); 42 (1-3, 5, 6); 43 (1-6); 44 (1-6); 45 (1-6); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (1-6); 55 (1-3)
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