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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); 3; 4; 5; 6; 7 (2); 8 (1-2); 9 (2); 10 (1, 2); 11 (1, 2); 12 (1, 2); 13 (1, 2); 14 (1, 2); 15 (1, 2); 16 (sup1, 1, 2); 17 (sup1, 1, 2); 18 (sup1, 1, 2); 19 (sup1, 1, 2); 20 (sup1, 1, 2); 21 (sup1, 1, 2); 22 (sup1, 1, 2); 23 (sup1, 1, 2); 24 (sup1, 1, 2); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 4, 6); 47 (1 to 6); 48 (1 to 6); 49 (1)
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Portico
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Preserved
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2026-04-23
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Preserved : 1971/1978: 1(1-2), 1972/1979: 2(1-2), 1973: 3(1), 1974: 4(1), 1975: 5(1), 1976: 6(1), 1984: 7(1-2)
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Portico
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Preserved
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2026-04-23
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Preserved : 1986: 9(1-2), 1987: 10(1-2), 1988: 11(1-2), 1989: 12(1-2), 1990: 13(1-2), 1991: 14(1-2), 1992: 15(1-2), 1993: 16(1-2), 1994: 17(1-2), 1995: 18(1-2), 1996: 19(1-2), 1997: 20(1-2), 1998: 21(1-2), 1999: 22(1-2), 2000: 23(1-2), 2001: 24(1-2), 2002: 25(1-3), 2003: 26(1-3), 2004: 27(1-3), 2005: 28(1-3), 2006: 29(1-3), 2007: 30(1-3), 2008: 31(1-3), 2009: 32(1-3), 2010: 33(1-3), 2011: 34(1-3), 2012: 35(1-4), 2013: 36(1-4), 2014: 37(1-4), 2015: 38(1-4), 2016: 39(1-4), 2017: 40(1-4), 2018: 41(1-4), 2019: 42(1-6), 2020: 43(1-6), 2021: 44(1-6), 2022: 45(1-6), 2023: 46(1-6), 2024: 47(1-6), 2025: 48(1-6), 2026: 49(1)
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LOCKSS Archive
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Preserved
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2026-04-27
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1 to 47
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CLOCKSS Archive
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Preserved
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2026-04-27
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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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2026-04-27
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48, 49
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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 3); 34 (1 to 3); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 5)
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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 : 2 (sup1, 1, 2); 3 (1 to 3); 4 (1 to 4); 21 (sup1, 1, 2); 22 (sup1, 1, 2); 23 (sup1, 1, 2); 24 (sup1, 1, 2); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6)
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