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Internet Archive
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Preserved
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2026-07-13
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1 to 28
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Scholars Portal
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Preserved
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2026-06-02
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Preserved : 1 (1, 2); 2 (1, 2); 3 (1 to 3); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1, 2, 3-4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 7); 27 (1 to 8); 28 (1 to 8); 29 (1 to 8); 30 (1 to 8); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 5, 6-7, 8, 9); 38 (1 to 9); 39 (1 to 9); 40 (1 to 9); 41 (sup1, 1 to 9); 42 (1 to 10); 43 (1 to 10); 44 (1 to 10); 45 (1 to 10); 46 (1 to 10); 47 (1 to 10); 48 (1 to 12); 49 (1 to 12); 50 (1 to 12); 51 (1 to 12); 52 (1 to 12); 53 (1 to 12); 54 (1 to 12); 55 (1 to 9, 10-11, 12); 56 (1 to 12); 57 (1 to 12); 58 (1 to 12); 59 (1)
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CLOCKSS Archive
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Preserved
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2026-07-06
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ahead-of-print to 43, 45 to 59
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LOCKSS Archive
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Preserved
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2026-07-06
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1 to 59
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LOCKSS Archive
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In Progress
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2026-07-06
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60
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Portico
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Preserved
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2026-07-09
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Preserved : 1974: 8(1-4), 1975: 9(1-4), 1976: 10(1-4), 1977: 11(1-6), 1978: 12(1-6), 1979: 13(1-6), 1980: 14(1-6), 1981: 15(1-6), 1982: 16(1-6), 1983: 17(1-6), 1984: 18(1-6), 1985: 19(1-6), 1986: 20(1-6), 1987: 21(1-6), 1988: 22(1-6), 1989: 23(1-6), 1990: 24(1-6), 1991: 25(1-6), 1992: 26(1-7)
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Portico
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Preserved
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2026-07-09
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Preserved : 1993: 27(1-8), 1994: 28(1-8), 1995: 29(1-8), 1996: 30(1-8), 1997: 31(1-9), 1998: 32(1-9), 1999/2000: 33(1-9), 2000: 34(1-9), 2001: 35(1-9), 2002: 36(1-9), 2003: 37(1-9), 2004: 38(1-9), 2005: 39(1-9), 2006: 40(1-9), 2007: 41(1-9), 2008: 42(1-10), 2009: 43(1-10), 2010: 44(1-10), 2011: 45(1-10), 2012: 46(1-10), 2013: 47(1-10), 2014: 48(1-12), 2015: 49(1-12), 2016: 50(1-12), 2017: 51(1-12), 2018: 52(1-12), 2019: 53(1-12), 2020: 54(1-12), 2021: 55(1-12), 2022: 56(1-12), 2023: 57(1-12), 2024: 58(1-12), 2025: 59(1), 2026: 60(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 : 4 (2 to 9); 5 (1 to 9, 11, 12); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 5, 6-7, 8, 9); 38 (1 to 9); 39 (1 to 9); 41 (sup1, 1 to 9); 42 (1 to 9); 43 (1 to 9); 44 (1 to 9); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11); 58 (1 to 9, 11, 12)
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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 10); 45 (1 to 10); 46 (1 to 10); 47 (1 to 10); 48 (1 to 12); 49 (1 to 12); 50 (1 to 12); 51 (1 to 12); 52 (1 to 12); 53 (2 to 12); 54 (1 to 12); 55 (1 to 10-11, 12); 56 (1 to 12); 57 (1 to 12); 58 (1 to 10)
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