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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); 12 (1, 2); 13 (1, 2); 14 (1, 2); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1 to 3); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1, 2-3); 38 (1, 2); 39 (3); 40 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1-2, 3-4); 52 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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16 to 18
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LOCKSS Archive
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Preserved
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2026-05-18
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1 to 51
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CLOCKSS Archive
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Preserved
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2026-05-18
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ahead-of-print to 52
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LOCKSS Archive
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In Progress
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2026-05-18
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52, 53
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Portico
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Preserved
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2026-05-21
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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(1-2), 1989: 16(1-2), 1990: 17(1-2), 1991: 18(1-2), 1991/1992: 19(1-2), 1993: 20(1-2), 1994: 21(1-2), 1995: 22(1-2), 1996: 23(1-2), 1997: 24(1-2), 1998: 25(1-2), 1999: 26(1-2), 2000: 27(1-2), 2001: 28(1-2), 2002: 29(1-2), 2003: 30(1-2), 2004: 31(1-2), 2005: 32(1-2), 2006: 33(1-3), 2007: 34(1-3), 2008: 35(1-2), 2009: 36(1-2), 2010: 37(1-3), 2011: 38(1-3), 2012: 39(1-3), 2013: 40(1-3), 2014: 41(1-3), 2015: 42(1-3), 2016: 43(1-3), 2017: 44(1-3), 2018: 45(1-3), 2019: 46(1-4), 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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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 3 (1, 2); 4 (1 to 3); 5 (1 to 4); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1, 2-3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (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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37 (1, 2-3); 38 (1 to 3); 39 (1 to 3); 40 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4)
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