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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 3); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 12); 8 (1 to 12); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1, 2, 4 to 12); 46 (1 to 12); 47 (1 to 3)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 47
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Portico
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Preserved
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2026-04-02
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Preserved : 1980: 1(1-3), 1981: 2(1-6), 1982: 3(1-6), 1983: 4(1-6), 1984: 5(1-6), 1985: 6(1-8, 11), 1986: 7(1-12), 1987: 8(1-12), 1988: 9(1-12), 1989: 10(1-12), 1990: 11(1-12), 1991: 12(1-12), 1992: 13(1-12), 1993: 14(1-12), 1994: 15(1-12), 1995: 16(1-12), 1996: 17(1-12)
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Portico
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Preserved
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2026-04-02
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Preserved : 1998: 19(5)
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Portico
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Preserved
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2026-04-02
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Preserved : 1999: 20(9, 12), 2000: 21(7-8), 2001: 22(5)
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Portico
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Preserved
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2026-04-02
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Preserved : 2004: 25(2-4, 7), 2005: 26(6-7), 2006: 27(6), 2007: 28(4, 9)
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LOCKSS Archive
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In Progress
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2026-04-06
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33, 40
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Portico
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Preserved
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2026-04-02
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Preserved : 2012: 33(5-12), 2013: 34(1-7, 9, 11-12), 2014: 35(1-9, 11-12), 2015: 36(3-12), 2016: 37(1-12), 2017: 38(1-12), 2018: 39(1-12), 2019: 40(1-12), 2019/2020: 41(1-12), 2021: 42(1-12), 2022: 43(1-12), 2023: 44(2-12), 2024: 45(1-11), 2025: 46(1-12), 2026: 47(1-3)
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LOCKSS Archive
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Preserved
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2026-04-06
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34 to 39
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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 (2 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 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12)
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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 (2 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 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12)
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Library of Congress
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Preserved
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2025-04-07
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37 (2); 38 (1, 4); 39 (2 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 10)
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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 : 22 (1-12); 23 (2, 5); 26 (10-12); 27 (1-9, 11, 12); 28 (1-3, 5-12); 29 (1-12); 30 (1-12); 31 (1-12); 32 (1-12); 33 (1-12); 34 (1-12); 35 (1-12); 36 (1-12); 37 (1-12); 38 (1-12); 39 (1-12); 40 (1-8, 10, 11)
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