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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 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 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); 20 (1); 24 (2); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (sup1, 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 4); 51 (1, 3, 4); 52 (sup1, 1 to 4); 53 (1 to 4); 54 (1 to 3); 55 (1-2, 3, 4); 56 (1 to 3); 57 (1, 2, 3-4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1, 2, 3-4); 63 (1-2, 3, 4); 64 (1, 2, 3-4)
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Portico
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Preserved
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2026-04-16
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Preserved : 2002: 41(1-4), 2003: 42(1-4), 2004: 43(1-4), 2005: 44(1-4), 2006: 45(1-4), 2007: 46(1-4), 2008: 47(1-4), 2009: 48(1-4), 2010: 49(1-4), 2011: 50(1-4), 2012: 51(1-4), 2013: 52(1-4), 2014: 53(1-4), 2015: 54(1-4), 2016: 55(1-4), 2017: 56(1-4), 2018: 57(1-4), 2019: 58(1-4), 2020: 59(1-2), 2021: 60(1-4), 2022: 61(1-4), 2023: 62(1-4), 2024: 63(1-2, 4), 2025: 64(1-4)
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Portico
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Preserved
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2026-04-16
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Preserved : 1981: 20(1-3), 1982: 21(1-2), 1983: 22(1-2), 1984: 23(1-2), 1985: 24(1-2), 1986: 25(1-3), 1987: 26(1-3), 1988: 27(1-3), 1989: 28(1-3), 1990: 29(1-4), 1991: 30(1-4), 1992: 31(1-4), 1993: 32(1-4), 1994: 33(1-4), 1995: 34(1-4), 1996: 35(1-4), 1997: 36(1-4), 1998: 37(1-4), 1999: 38(1, S 1, sup1-4), 2000: 39(1-4), 2001: 40(1-4), 2002: 41(1-4), 2003: 42(1-4), 2004: 43(1-4), 2005: 44(1-4), 2006: 45(1-4), 2007: 46(1-4), 2008: 47(1-4), 2009: 48(1-4), 2010: 49(1-4), 2011: 50(1-4), 2012: 51(1-4), 2013: 52(1-4), 2014: 53(1-4), 2015: 54(1-4), 2016: 55(1-4), 2017: 56(1-4), 2018: 57(1-4), 2019: 58(1-4), 2020: 59(1-4), 2021: 60(1-4), 2022: 61(1-4), 2023: 62(1-4), 2024: 63(1-4), 2025: 64(1-4)
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CLOCKSS Archive
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Preserved
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2026-04-13
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ahead-of-print to 64
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 64
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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 (1 to 4); 5 (1 to 4); 6 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (sup1, 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 4); 52 (sup1, 1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1-2, 3, 4); 56 (1 to 4); 57 (1, 2, 3-4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1, 2, 3-4); 63 (1-2, 3, 4)
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Library of Congress
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Preserved
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2025-04-07
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49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (sup1, 1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1-2, 3, 4); 56 (1 to 4); 57 (1 to 3-4); 58 (1, 3, 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 3-4); 63 (1-2, 3)
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