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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 21 (Supplement, 1 to 12); 22 (Supplement, 1 to 12); 23 (Supplement, 1 to 12); 24 (Supplement, 1 to 12, 15001); 26 (3, 11); 27 (1, 11); 30 (10, 11, 12p1); 32 (1 to 12); 33 (s1, 1 to 12); 34 (s1, 1 to 12); 35 (s1, 1 to 12); 36 (s4, 1 to 12); 37 (1 to 3, 5 to 12); 38 (1 to 3 to 6 to 8, 9, 11, 12); 39 (1pt1, 2 to 4 to 12); 40 (1 to 5)
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Portico
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Preserved
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2026-04-02
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Preserved : 1995: 21(4-5, 7, 9), 1996: 22(10), 1997: 23(11)
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Portico
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Preserved
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2026-04-02
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Preserved : 1995: 21(1-12), 1996: 22(1-12), 1997: 23(1-12), 1998: 24(1-12, S 15), 1999: 25(1-12), 2000: 26(1-12), 2001: 27(1-12), 2002: 28(1-12), 2003: 29(1-12), 2004: 30(1-11), 2005: 31(1-12), 2006: 32(1-12), 2007: 33(1-12), 2008: 34(1-12), 2009: 35(1-12), 2010: 36(1-12), 2011: 37(1-12), 2012: 38(1-2, 2ptII, 3-6, 7pt1, 7pt2, 8-12), 2013: 39(1pt1, 1pt2, 2, 3pt1, 3pt2, 4-12), 2014: 40(1-5)
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CLOCKSS Archive
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Preserved
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2026-04-06
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42 to 52
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Portico
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Preserved
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2026-04-02
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Preserved : 2016: 42(1-12), 2017: 43(1-12), 2018: 44(1-12), 2019: 45(1-12), 2020: 46(1-12), 2021: 47(1-12), 2022: 48(1-12), 2023: 49(1-4, 4, S, 5, 5, S, 6-12), 2024: 50(1-9, 9, S, 10-11, 11, S, 12, 12, S), 2025: 51(1-9, 9, S, 10-12, 12, S), 2026: 52(1-4)
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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 to 5 to 9, 11, 12p2); 4 (1 to 5); 23 (1 to 9, 11, 12); 24 (S15, 1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 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); 34 (, 1 to 9, 11, 12); 35 (, 1 to 9, 11, 12); 36 (, 1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 6 to 8, 9, 11, 12); 39 (1pt1, 2 to 4 to 9, 11, 12)
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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 to 5 to 9, 11, 12p2); 4 (1 to 5); 23 (1 to 9, 11, 12); 24 (S15, 1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 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); 34 (, 1 to 9, 11, 12); 35 (, 1 to 9, 11, 12); 36 (, 1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 6 to 8, 9, 11, 12); 39 (1pt2, 2 to 4 to 9, 11, 12)
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