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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 6); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 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 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 to 6); 28 (1, 2, 3-4, 5, 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 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 6); 62 (1)
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Internet Archive
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Preserved
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2025-08-08
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2 to 23
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Portico
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Preserved
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2026-04-16
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Preserved : 1965: 1(2-6), 1966: 2(1-2, 4-6), 1967: 3(2-6), 1968: 4(1-6), 1969: 5(1-6), 1970: 6(1, 3-6), 1971: 7(3-6), 1972: 8(1-4, 6), 1973: 9(1-6), 1974: 10(1-4), 1975: 11(1, 3-6), 1976: 12(1-3, 5-6), 1977: 13(4-6), 1978: 14(4-5), 1979: 15(4-6), 1980: 16(4, 6), 1981: 17(3, 5-6), 1982: 18(1-4, 6), 1983: 19(4-6), 1984: 20(4, 6), 1985: 21(4-5), 1986: 22(2, 5-6), 1987: 23(4-6), 1988: 24(1, 4, 6), 1989: 25(3-6), 1990: 26(3, 5-6), 1991: 27(4-6), 1992: 28(5-6), 1993: 29(3-6), 1994: 30(2-6), 1995: 31(5-6), 1996: 32(5)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 62
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Portico
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Preserved
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2026-04-16
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Preserved : 1999: 35(1)
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Portico
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Preserved
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2026-04-16
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Preserved : 2001: 37(6)
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Portico
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Preserved
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2026-04-16
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Preserved : 2005: 41(1, 3, 5), 2006: 42(1, 3-4), 2007: 43(4-5), 2008: 44(1-2, 4-5), 2009: 45(3, 5)
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LOCKSS Archive
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In Progress
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2026-04-13
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48, 55
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Portico
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Preserved
|
2026-04-16
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Preserved : 2012/2013: 48(2, 5-6), 2013/2014: 49(1-6), 2014: 50(1-3, 5-6), 2015: 51(1-6), 2016: 52(1-6), 2017: 53(1-6), 2018: 54(1-6), 2019: 55(1-6), 2020: 56(1-6), 2021: 57(1-6), 2022: 58(1-6), 2023: 59(1-6), 2024: 60(1-6), 2025: 61(1-6)
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LOCKSS Archive
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Preserved
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2026-04-13
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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 (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 5)
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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); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (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 5)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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|
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Preserved : 4 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (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 5)
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National Digital Preservation Program, China
|
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Preserved
|
2025-10-23
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|
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Preserved : 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (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); 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
|
2025-12-04
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|
|
Preserved : 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (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); 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 Library of the Netherlands
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Preserved
|
2024-12-15
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|
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Preserved : 34 (5); 36 (4-6); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (2-6); 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 (1-4); 118 (2)
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