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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 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1); 8; 9 (2 to 4); 10 (1); 11; 12 (2 to 4); 13 (1); 14 (2 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (Suppl, 1 to 4); 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 8); 37 (1 to 8); 38 (1 to 6, 7-8); 39 (1 to 8); 40 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8); 50 (1 to 8); 51 (1 to 8); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 9); 57 (1 to 9); 58 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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4 to 38
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Portico
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Preserved
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2026-04-09
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Preserved : 1969: 1(1), 1970: 2(1-2, 4), 1971: 3(4), 1972: 4(1-2, 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 58
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Portico
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Preserved
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2026-04-09
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Preserved : 1974: 6(1-3)
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Portico
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Preserved
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2026-04-09
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Preserved : 1975: 7(1-2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1977: 9(2), 1978: 10(1), 1979: 11(1), 1980: 12(1), 1981: 13(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1982: 14(2-3)
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Portico
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Preserved
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2026-04-09
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Preserved : 1983: 15(4), 1984: 16(1), 1985: 17(1-2, 4), 1986: 18(2-4), 1987: 19(1-2, 4), 1988: 20(1-4), 1989: 21(1-2, 4), 1990: 22(1, 3), 1991: 23(1-2, 4), 1992: 24(2-3), 1993: 25(3), 1994: 26(2), 1995: 27(2, 4), 1996: 28(1-2, S 2, 3-4), 1997: 29(1-4, S 4), 1998: 30(1-6), 1999: 31(1-6), 2000: 32(1-6), 2001: 33(1-6), 2002: 34(1-6), 2003: 35(1-6), 2004: 36(1-8), 2005: 37(1-8), 2006: 38(1-8), 2007: 39(1-8), 2008: 40(1-8), 2009: 41(1-8), 2010: 42(1-8), 2011: 43(1-8), 2012: 44(1-8), 2012/2013: 45(1-8), 2014: 46(1-8), 2015: 47(1, 3-8), 2016: 48(1-8), 2017: 49(1-8), 2018: 50(1-8), 2019: 51(1-8), 2020: 52(1-6), 2021: 53(1-6), 2022: 54(1-6), 2023: 55(1-6), 2024: 56(1-9), 2025: 57(1-9), 2025/2026: 58(1-3)
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LOCKSS Archive
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In Progress
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2026-04-06
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44, 45
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LOCKSS Archive
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Preserved
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2026-04-06
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46 to 51
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Library of Congress
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Preserved
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2025-04-07
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49 (3); 50 (1 to 8); 51 (1 to 8); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 8); 57 (1)
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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 : 3 (1 to 6); 4 (1 to 8); 5 (1 to 8); 29 (Suppl 4, 1 to 4); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 8); 37 (Suppl 1, 1 to 8); 38 (1 to 7); 39 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (Suppl 1, 1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8); 51 (1 to 8); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 9)
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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 6); 4 (1 to 8); 5 (1 to 8); 29 (Suppl 4, 1 to 4); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 8); 37 (Suppl 1, 1 to 8); 38 (1 to 7); 39 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (Suppl 1, 1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8); 51 (1 to 8); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 9)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 18 (5); 29 (1); 30 (2-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-8); 37 (1-8); 38 (1-6, 7-8); 39 (1, 3-8); 40 (1-8); 41 (1-8); 42 (1-8); 43 (1-8); 44 (supplement-1, 1-8); 45 (1-8); 46 (1-8); 47 (1-8); 48 (1-8); 49 (1-8); 50 (1-8); 51 (1-8)
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