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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 16 (1); 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36 (none); 37; 38; 39; 40; 41; 42
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Portico
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Preserved
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2026-04-02
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Preserved : 1981: 1(1), 1982: 2(1), 1983: 3(1), 1984: 4(1), 1985: 5(1), 1986: 6(1), 1987: 7(1), 1988: 8(1), 1989: 9(1), 1990: 10(1), 1991: 11(1), 1992: 12(1), 1993: 13(1), 1994: 14(1), 1995: 15(1), 1996: 16(1), 1997: 17(1), 1998: 18(1), 1999: 19(1), 2001: 20(1), 2001: 21(1), 2003: 22(1), 2004: 23(1), 2005: 24(1), 2006: 25(1), 2007: 26(1), 2008: 27(1), 2009: 28(1), 2010: 29(1), 2011: 30(1), 2012: 31(1), 2013: 32(1), 2014: 33(1), 2015: 34(1), 2016: 35(1), 2017: 36, 2018: 37, 2019: 38, 2020: 39, 2021: 40, 2022: 41
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LOCKSS Archive
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Preserved
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2026-04-06
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27 to 37
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CLOCKSS Archive
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In Progress
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2026-04-06
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27, 38 to 42
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CLOCKSS Archive
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Preserved
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2026-04-06
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28 to 37
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LOCKSS Archive
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In Progress
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2026-04-06
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38
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Portico
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Preserved
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2026-04-02
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Preserved : 2024: 43
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : ; 4; 35 (1); 36; 37; 38; 39; 41
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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; 35 (1); 36; 37; 38; 39; 41
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