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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 5 (2 to 7, 9 to 11); 6 (2, 4, 5, 8 to 12); 7 (3 to 6, 12); 8 (4, 7, 8, 11); 9 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1, 2, 4 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1, 3, 4, 6); 21 (1, 3, 4, 6, 7, 9, 10); 22 (1 to 3, 10); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 13); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 36 (1); 37 (2 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (2 to 4); 50 (1 to 6); 51 (1 to 6); 52 (1, 4 to 6); 53 (1 to 6); 54 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 33
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Portico
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Preserved
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2026-05-07
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Preserved : 2009: 37(1-4), 2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2014/2015: 43(1-3)
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Portico
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Preserved
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2026-05-07
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Preserved : 1974: 2(8, 11-12), 1975: 3(1-9, 11-12)
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Portico
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Preserved
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2026-05-07
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Preserved : 1976: 4(12), 1977: 5(1-12), 1978: 6(1-5, 7-12), 1979: 7(1-12), 1980: 8(1-12), 1981: 9(1-12), 1982: 10(1-12), 1983: 11(1-12), 1984: 12(1-12), 1985: 13(1-2, 4-12), 1986: 14(1-12), 1987: 15(1-12), 1988: 16(1-12), 1989: 17(1-12), 1990: 18(1-12), 1991: 19(1-12), 1992: 20(1-12), 1993: 21(1-12), 1994: 22(1-12), 1995: 23(1-12), 1996: 24(1-12), 1997: 25(1-12), 1998: 26(1-12), 1999: 27(1-12), 2000: 28(1-12), 2001: 29(1-12), 2002: 30(1-12), 2003: 31(1-12), 2004: 32(1-12), 2005: 33(1-12)
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Portico
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Preserved
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2026-05-07
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Preserved : 2008: 36(1)
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Portico
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Preserved
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2026-05-07
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Preserved : 2009: 37(1-4), 2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2015: 43(1-4), 2016: 44(1-4), 2017: 45(1-4), 2018: 46(1-4), 2019: 47(1-4), 2020: 48(1-4), 2021: 49(1-4), 2022: 50(1-6), 2023: 51(1-6), 2024: 52(1-6), 2025: 53(1-6), 2026: 54(1-2)
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LOCKSS Archive
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Preserved
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2026-05-04
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2 to 33, 36 to 52
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CLOCKSS Archive
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Preserved
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2026-05-04
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ahead-of-print, just-accepted, 2 to 33, 36 to 53
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LOCKSS Archive
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In Progress
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2026-05-04
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53, 54
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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 (2 to 9, 11, 12); 4 (1 to 4); 5 (1 to 6); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11 to 13); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 36 (1); 37 (2 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 5); 52 (1 to 6); 53 (1)
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Library of Congress
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Preserved
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2025-04-07
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38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6)
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