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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2); 2 (S1, 1 to 4); 3 (1 to 4); 4 (S3, 1 to 4); 5 (S5, 1 to 4); 6 (S7, 1 to 4); 7 (S9, 1 to 4); 8; 10 (S12, 1 to 4); 11 (Suppl., 1 to 3); 12 (s14, 1 to 6); 13 (s15, 1 to 6); 14 (1 to 6); 15 (s16, 1 to 6); 16 (1 to 8); 17 (s17, 1 to 8); 18 (s18, 1 to 8); 19 (1 to 8); 20 (s20, 1 to 8); 21 (s21, 1-Part-I, 2p1, 3 to 5 to 8); 22 (1‐Part‐I, 2 to 8); 23 (s22, 1 to 8); 24 (1 to 7); 25 (1 to 8); 26 (1 to 8); 27 (S23, 1 to 8); 28 (1 to 8); 29 (1 to 8); 30 (1 to 8); 31 (S24, 1 to 8); 32 (1 to 8); 33 (S27, 1 to 12); 34 (S28, 1 to 12); 35 (S29, 1 to 12); 36 (1 to 12); 37 (1, 2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1990: 1(1-2), 1991: 2(1, S 1, 2, S 2, 3-4), 1992: 3(1-4), 1993: 4(1-3, S 3, 4, S 4), 1994: 5(1-4, S 5, S 6), 1995: 6(1-4, S 7), 1996: 7(1-4, S 9), 1997: 8(1-4), 1998: 9(1), 1999: 10(1), 2000: 11(1-4), 2001: 12(1-6), 2002: 13(1-6), 2003: 14(1-6), 2004: 15(1-6), 2005: 16(1-8), 2006: 17(1-8), 2007: 18(1-8), 2008: 19(1-8), 2009: 20(1-8), 2010: 21(1‐p‐I, 2, Part 1, 2, Part 2, 3, 4, Part 1, 4, Part 2, 5-8), 2011: 22(2-8), 2012: 23(1-8, s22), 2013: 24(1-8), 2014: 25(1-8), 2015: 26(1-8), 2016: 27(1-8, S23), 2017: 28(1-8), 2018: 29(1-8), 2019: 30(1-8), 2020: 31(1-8, S24, S25, S26), 2021: 32(1-8), 2022: 33(1-12, S27), 2023: 34(1-12, S28), 2024: 35(1-12, S29), 2025: 36(1-12), 2026: 37(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-06
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2 to 37
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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 : 1 (S12, 1 to 4); 2 (, 1 to 8); 3 (1 to 8); 8 (1 to 4); 9 (1 to 4); 11 (, 1 to 4); 12 (, 1 to 6); 13 (, 1 to 6); 14 (1 to 6); 15 (, 1 to 6); 16 (1 to 8); 17 (, 1 to 8); 18 (, 1 to 8); 19 (, 1 to 8); 21 (, 1?Part?I, 2p2, 3 to 5 to 8); 22 (1?Part?I, 2 to 8); 23 (, 1 to 8); 24 (1 to 8); 25 (1 to 6); 26 (1 to 8); 27 (, 1 to 8); 28 (1 to 8); 29 (1 to 8); 31 (S24, 1 to 8); 32 (1 to 8); 33 (S27, 1 to 9, 11, 12); 34 (S28, 1 to 9, 11, 12); 35 (S29, 1 to 9, 11, 12); 36 (1 to 9)
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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 : 1 (S12, 1 to 4); 2 (, 1 to 8); 3 (1 to 8); 8 (1 to 4); 9 (1 to 4); 11 (, 1 to 4); 12 (, 1 to 6); 13 (, 1 to 6); 14 (1 to 6); 15 (, 1 to 6); 16 (1 to 8); 17 (, 1 to 8); 18 (, 1 to 8); 19 (, 1 to 8); 21 (, 1?Part?I, 2p2, 3 to 5 to 8); 22 (1pt2, 2 to 8); 23 (, 1 to 8); 24 (1 to 8); 25 (1 to 6); 26 (1 to 8); 27 (, 1 to 8); 28 (1 to 8); 29 (1 to 8); 31 (S24, 1 to 8); 32 (1 to 8); 33 (S27, 1 to 9, 11, 12); 34 (S28, 1 to 9, 11, 12); 35 (S29, 1 to 9, 11, 12); 36 (1 to 9)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 16 (2, 8); 17 (s17, 1-8); 18 (s18, 1-8)
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