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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, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1, 2); 12 (1, 2); 13 (1, 2); 14 (1, 2); 15 (1); 16 (2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1-2, 3); 25 (1 to 3); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1, 2-3, 4); 32 (1, 2, 3-4); 33 (1, 2-3, 4, 5); 34 (1 to 5); 35 (1 to 5); 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 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1)
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Internet Archive
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Preserved
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2025-08-08
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33
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Portico
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Preserved
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2026-04-16
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Preserved : 1974: 1(1-2), 1975: 2(1-2), 1976: 3(1-2), 1977: 4(1-2), 1978: 5(1-2), 1979: 6(1-2), 1980: 7(1-2), 1981: 8(1-2), 1982: 9(1-2), 1983: 10(1-2), 1984: 11(1-2), 1985: 12(1-2), 1986: 13(1-2), 1987: 14(1-2), 1988: 15(1), 1989: 16(1-2), 1990: 17(1-2), 1991: 18(1-2), 1992: 19(1-2), 1993: 20(1-3), 1994: 21(1-3), 1995: 22(1-3), 1996: 23(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 53
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Portico
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Preserved
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2026-04-16
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Preserved : 2007: 34(5), 2008: 35(1-5), 2009: 36(1-4), 2010: 37(1-4), 2011: 38(1-4), 2012: 39(2), 2013: 40(1-3), 2014: 41(1-4), 2015: 42(2-4), 2016: 43(1-4), 2017: 44(1-4), 2018: 45(1-4), 2019: 46(1-4), 2018/2019/2020: 47(1-4), 2021: 48(1-4), 2022: 49(1-4), 2023: 50(1-4), 2024: 51(1-4), 2025: 52(1-4), 2026: 53(1)
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LOCKSS Archive
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In Progress
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2026-04-13
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39, 46
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LOCKSS Archive
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Preserved
|
2026-04-13
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40 to 45
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 24 (1, 3); 25 (1-3); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1); 32 (2, 3-4); 33 (1, 2-3, 4, 5); 34 (1-5); 35 (1-5); 36 (1-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4)
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Library of Congress
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Preserved
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2025-04-07
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|
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45 (2 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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|
|
Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 24 (1, 3); 25 (1 to 3); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1, 2, 4); 32 (1 to 3); 33 (1, 2, 4, 5); 34 (1 to 5); 35 (1 to 5); 36 (1 to 4); 37 (1 to 4); 38 (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)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 24 (1, 3); 25 (1 to 3); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1, 2, 4); 32 (1 to 3); 33 (1, 2, 4, 5); 34 (1 to 5); 35 (1 to 5); 36 (1 to 4); 37 (1 to 4); 38 (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)
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