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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 17; 25 (2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (3); 30 (1 to 3); 31 (1 to 3); 33 (1); 34 (2, 3); 35; 36 (1 to 3); 37 (1-2, 3); 38 (1, 2); 39 (1, 2); 40
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Portico
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Preserved
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2026-04-09
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Preserved : 1986: 1(1-2), 1987: 2(1-2), 1988: 3(1-2), 1989: 4(1-2), 1990: 5(1-2), 1991: 6(1-2), 1992: 7(1-2), 1993: 8(1-2), 1994: 9(1-2), 1995: 10(1-2), 1996: 11(1-2), 1997: 12(1-2), 1998: 13(1-2), 1999: 14(1-2), 2000: 15(1-2), 2001: 16(1-2), 2002: 17(1-2), 2003: 18(1-2), 2004: 19(1-2), 2005: 20(1-2), 2006: 21(1-2), 2007: 22(1-2), 2008: 23(1-2), 2009: 24(1-2), 2010: 25(1-2), 2011: 26(1-2), 2012: 27(1-2), 2013: 28(1-2), 2014: 29(1-3), 2015: 30(1-3), 2016: 31(1-3), 2017: 32(1-3), 2018: 33(1-3), 2019: 34(1-3), 2020: 35(1-3), 2021: 36(1-3), 2022: 37(1-3), 2023: 38(1-3), 2024: 39(1-3), 2025: 40(1-2)
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CLOCKSS Archive
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Preserved
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2026-04-06
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23 to 33
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LOCKSS Archive
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Preserved
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2026-04-06
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23 to 39
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CLOCKSS Archive
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In Progress
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2026-04-06
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34 to 39
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LOCKSS Archive
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In Progress
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2026-04-06
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40
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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 : 3 (1 to 3); 4 (1); 22 (2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1-2, 3); 36 (1 to 3); 37 (1-2, 3); 38 (1 to 3); 39 (1, 3)
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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 3); 4 (1); 22 (2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1-2, 3); 36 (1 to 3); 37 (1-2, 3); 38 (1 to 3); 39 (1, 3)
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