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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); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1); 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46 (sup1, 1); 47 (2); 48 (1, 2); 49 (1, 2); 50 (1, 2); 51 (1, 2); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1, 3, 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (2 to 4); 60 (1 to 3); 61 (1 to 4); 62 (1, 2-3, 4); 63 (1, 2, 3-4); 64 (1 to 4); 65 (1, 2, 3-4); 66 (1 to 4); 67 (1-2, 3, 4); 68 (1, 2, 3-4)
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Internet Archive
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Preserved
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2025-08-08
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1 to 50
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 64
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Portico
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Preserved
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2026-04-09
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Preserved : 1986: 17(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1988: 19(1), 1989: 20(1), 1989: 21(1), 1990: 22(1), 1990: 23(1), 1991: 24(1), 1991: 25(1), 1992: 26(1), 1992: 27(1), 1993: 28(1), 1994: 29(1), 1994: 30(1), 1995: 31(1), 1995: 32(1), 1996: 33(1), 1996: 34(1), 1997: 35(1), 1997: 36(1), 1998: 37(1), 1998: 38(1), 1999: 39(1), 2000: 40(1), 2000: 41(1), 2001: 42(1), 2002: 43(1), 2002: 44(1), 2003: 45(1), 2003: 46(1), 2004: 47(1-2), 2005: 48(1-2), 2006: 49(1-2), 2007: 50(1-2), 2008: 51(1-2), 2009: 52(1-4), 2010: 53(1-4), 2011: 54(1-4), 2012: 55(1-4), 2013: 56(1-4), 2014: 57(1-4), 2015: 58(1-4), 2016: 59(1-4), 2017: 60(1-4), 2018: 61(1-4), 2019: 62(1-4), 2020: 63(1-4), 2021: 64(1-4), 2022: 65(1-4), 2023: 66(1-4), 2024: 67(1-4), 2025: 68(1-4)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 67
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CLOCKSS Archive
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Preserved
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2026-04-06
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51 to 58, 60
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LOCKSS Archive
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In Progress
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2026-04-06
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68
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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); 5 (2); 6 (1 to 4); 35 (1); 36; 37; 38; 39; 41; 42; 43; 44; 45; 46 (sup1, 1); 47 (2); 48 (1, 2); 49 (1, 2); 51 (1, 2); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1, 2-3, 4); 63 (1, 2, 3-4); 64 (1 to 4); 65 (1, 2, 3-4); 66 (1 to 4); 67 (1-2, 3)
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Library of Congress
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Preserved
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2025-04-07
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60 (1 to 4); 61 (1 to 4); 62 (1, 2-3, 4); 63 (1 to 3-4); 64 (1 to 4); 65 (1 to 3-4); 66 (1 to 4); 67 (1-2, 3)
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