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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 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (5); 6 (1 to 4); 7 (1); 10 (2 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1-2, 3-4); 26 (1 to 4); 27 (1 to 4); 32 (2); 33 (4, 5); 34 (1 to 5); 35 (1, 4, 5); 36 (1 to 5); 37 (1 to 5); 38 (1 to 3, 5); 39 (1, 3 to 5); 40 (1 to 5); 41 (1 to 5); 42 (1 to 5); 43 (1 to 5); 44 (1 to 5); 45 (1 to 5); 46 (1 to 5); 47 (1 to 5); 48 (1 to 4)
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Internet Archive
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Preserved
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2025-08-08
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2 to 37
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Portico
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Preserved
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2026-04-02
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Preserved : 1977: 5(5), 1978/1979: 6(1-4), 1979/1980: 7(1-4), 1981/1982: 8(1-2), 1983/1984: 9(1-4), 1985/1986: 10(1-4), 1987: 11(1-4), 1988: 12(1-4), 1989: 13(1-4), 1990: 14(1-4), 1991: 15(1-4), 1992: 16(1-4), 1993: 17(1-4), 1994: 18(1-4), 1995: 19(1-4), 1996: 20(1-4), 1997: 21(1-4), 1998: 22(1-4), 1999: 23(1-4), 2000: 24(1-4), 2001: 25(1-4), 2003: 26(1-4), 2004: 27(1-4), 2005: 28(1-5), 2006: 29(1-5), 2007: 30(1-5), 2008: 31(1-5), 2009: 32(1-5), 2010: 33(1-5), 2011: 34(1-5), 2012: 35(1-5), 2013: 36(1-5), 2014: 37(1-5), 2015: 38(1-5), 2016: 39(1-5), 2017: 40(1-5), 2018: 41(1-5), 2019: 42(1-5), 2020: 43(1-5), 2021: 44(1-5), 2022: 45(1-5), 2023: 46(1-5), 2024: 47(1-5), 2025: 48(1-5), 2026: 49(1)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 47
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CLOCKSS Archive
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Preserved
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2026-04-06
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ahead-of-print to 48
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LOCKSS Archive
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In Progress
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2026-04-06
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48, 49
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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 to 5); 4 (1 to 5); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1-2, 3-4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 5); 29 (1 to 5); 31 (1 to 5); 32 (1 to 5); 33 (1 to 5); 34 (1 to 5); 35 (1 to 5); 36 (1 to 5); 37 (1 to 5); 38 (1 to 5); 39 (1 to 5); 41 (1 to 5); 42 (1 to 5); 43 (1 to 5); 44 (1 to 5); 45 (1 to 5); 46 (1 to 3, 5); 47 (1 to 5); 48 (1)
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Library of Congress
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Preserved
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2025-04-07
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33 (1 to 5); 34 (1 to 5); 35 (1 to 5); 36 (1 to 5); 37 (1 to 5); 38 (1 to 5); 39 (1 to 5); 40 (1 to 5); 41 (1 to 5); 42 (1 to 5); 43 (1 to 5); 44 (1 to 5); 45 (1 to 5); 46 (1 to 5); 47 (1 to 4)
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