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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 4 (2); 6 (1); 8 (2, 3); 9 (1, 2-3); 10 (1, 2, 3-4); 11 (1_suppl, 2 to 4); 12 (1 to 4); 13 (1, 2, 3-4); 14 (1 to 4); 15 (1, 2, 3-4); 16 (1-2, 3, 4); 17 (2 to 4); 18 (1, 2, 3-4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (2 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1_suppl, 2 to 4); 30 (1 to 4); 32 (1_suppl); 47 (2 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, 2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1970: 4(1-2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1972: 6(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1974: 8(1-3), 1975: 9(1-3), 1976: 10(1-4), 1977: 11(1, 1, S, 2-4), 1978: 12(1-4), 1979: 13(1-4), 1980: 14(1-4), 1981: 15(1-4), 1982: 16(1-4), 1983: 17(2-4), 1984: 18(1-4), 1985: 19(1-4), 1986: 20(1-4), 1987: 21(1-4), 1988: 22(1-4), 1989: 23(2-4), 1990: 24(1-4), 1991: 25(1-4), 1992: 26(1-4), 1993: 27(1-4), 1994: 28(1-4), 1995: 29(1, 1, S, 2-4), 1996: 30(1-4), 1997: 31(1-4), 1998: 32(1, 1, S, 2-4), 1999: 33(1-4), 2000: 34(1-4), 2001: 35(1-4), 2002: 36(1, 3-4), 2003: 37(1-4), 2004: 38(1-4), 2005: 39(1-4), 2006: 40(1-4), 2007: 41(1, 3), 2008: 42(1-4, 6), 2009: 43(1-6), 2010: 44(1-6), 2011: 45(1-4, 6), 2012: 46(3), 2013: 47(1-6), 2014: 48(1-6), 2015: 49(1-6), 2016: 50(1-6), 2017: 51(1-6), 2018: 52(1-6), 2019: 53(1-6)
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CLOCKSS Archive
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Preserved
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2026-04-06
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47 to 50
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LOCKSS Archive
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Preserved
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2026-04-06
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47 to 53
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CLOCKSS Archive
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In Progress
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2026-04-06
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51 to 53
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LOCKSS Archive
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In Progress
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2026-04-06
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37, 43, 45, 47 to 54
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Portico
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Preserved
|
2026-04-02
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Preserved : 2015: 49(6)
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Portico
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Preserved
|
2026-04-02
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Preserved : 2017: 51(1)
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CLOCKSS Archive
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Preserved
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2026-04-06
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51 to 53, 55 to 60
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Portico
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Preserved
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2026-04-02
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Preserved : 2018: 52(4), 2019: 53(3, 5-6), 2020: 54(2), 2021: 55(1-2, 4-6), 2022: 56(1-6), 2023: 57(1-6), 2024: 58(1-6), 2025: 59(2-6), 2026: 60(1-2)
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Library of Congress
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Preserved
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2025-04-07
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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); 53 (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 : 54 (1 to 6); 55 (1 to 6); 57 (1 to 5); 58 (1 to 6)
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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 : 54 (1 to 6); 55 (1 to 6); 57 (1 to 5); 58 (1 to 6)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 4 (2); 6 (1); 8 (2, 3); 9 (1); 10 (2, 3-4); 11 (1-4); 12 (1-4); 13 (1, 2, 3-4); 14 (1-4); 15 (1, 2, 3-4); 16 (1-2, 3, 4); 20 (6); 24 (4); 25 (3, 4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1-3); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1, 3, 4); 37 (3); 40 (4); 42 (6); 46 (3); 47 (1-6); 48 (1-6); 49 (1-5); 50 (1-6); 51 (1-6); 52 (1-6); 53 (1-5)
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British Library
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Preserved
|
2019-09-18
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Preserved : 48 (1 to 6), 49 (1 to 6), 50 (1 to 6), 51 (1 to 6), 52 (1 to 5)
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