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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 to 4); 3 (5 to 7); 4 (8 to 10); 5 (11 to 13); 6 (14, 15-16); 7 (19); 9 (25); 12 (32 to 34); 13 (35 to 37); 14 (38 to 40); 15 (41 to 43); 16 (44, 45-46); 17 (47 to 49); 18 (50 to 52); 19 (53 to 55); 20 (56 to 58); 21 (59 to 62); 22 (63 to 66); 23 (67 to 70); 24 (71 to 74); 25 (75 to 78); 26 (79 to 82); 27 (83 to 86); 28 (87 to 90); 29 (91, 92, 93/94); 30 (95, 97, 98); 31 (100, 102); 33 (109); 34 (114); 35 (115 to 118); 36 (119); 37 (123 to 126); 38 (127 to 130); 39 (131 to 134); 40 (135 to 138); 41 (sup1, 139 to 142); 42 (143, 144, 146); 43 (sup1, 148 to 150); 44 (151 to 153); 45 (155 to 158); 46 (159 to 162); 47 (163 to 166); 48 (167 to 170); 49 (171 to 174); 50 (175, 176, 177-178)
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Internet Archive
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Preserved
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2025-08-08
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25 to 30
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CLOCKSS Archive
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Preserved
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2026-04-13
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CLOCKSS Archive
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Preserved
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2026-04-13
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ahead-of-print to 52
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CLOCKSS Archive
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Preserved
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2026-04-13
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ahead-of-print to 50
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 50
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Portico
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Preserved
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2026-04-23
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Preserved : 1974: 1(1), 1975: 2(2-4), 1976: 3(5-7), 1977: 4(8-10), 1978: 5(11-13), 1979: 6(14-16), 1980: 7(17-19), 1981: 8(20-22), 1982: 9(23-25), 1983: 10(26-28), 1984: 11(29-31), 1985: 12(32-34), 1986: 13(35-37), 1987: 14(38-40), 1988: 15(41-43), 1989: 16(44)
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Portico
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Preserved
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2026-04-23
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Preserved : 1990: 17(47-49), 1991: 18(50-52), 1992: 19(53-55), 1993: 20(56-58), 1994: 21(59-62), 1995: 22(63-66), 1996: 23(67-70), 1997: 24(71-74), 1998: 25(75-78), 1999: 26(79-82), 2000: 27(83-86), 2001: 28(87-90), 2002: 29(91-94), 2003: 30(95-98), 2004: 31(99-102), 2005: 32(103-106), 2006: 33(107-110), 2007: 34(111-114), 2008: 35(115-118), 2009: 36(119-122), 2010: 37(123-126), 2011: 38(127-130), 2012: 39(131-134), 2013: 40(135-138), 2014: 41(sup1, 139-142), 2015: 42(143-146), 2016: 43(sup1, 147-150), 2017: 44(151-154), 2018: 45(155-158), 2019: 46(159-162), 2020: 47(163-166), 2021: 48(167-170), 2022: 49(171-174), 2023: 50(175-178)
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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 : 3 (95 to 98); 4 (135 to 138); 5 (175, 176, 177-178); 24 (71 to 74); 25 (75 to 78); 26 (8, 79, 81, 82); 27 (83 to 86); 28 (9, 87 to 89); 29 (91, 92, 93-94); 31 (1, 11, 12, 99); 32 (13, 14-15, 16); 33 (11, 17 to 19); 34 (111 to 114); 35 (115 to 118); 36 (12, 119, 121, 122); 37 (123 to 126); 38 (13, 127 to 129); 39 (131 to 134); 41 (sup1, 14, 139, 141, 142); 42 (143 to 146); 43 (sup1, 15, 147 to 149); 44 (151 to 154); 45 (155 to 158); 46 (16, 159, 161, 162); 47 (163 to 166); 48 (17, 167 to 169); 49 (171 to 174)
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Library of Congress
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Preserved
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2025-04-07
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37 (123 to 126); 38 (127 to 130); 39 (131 to 134); 40 (135 to 138); 41 (sup1, 139 to 142); 42 (143 to 146); 43 (sup1, 147 to 150); 44 (151 to 154); 45 (155 to 158); 46 (159 to 162); 47 (163 to 166); 48 (167 to 170); 49 (171 to 174); 50 (175 to 177-178)
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