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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, 2); 2 (1, 2); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 3, 4_suppl); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 8); 18 (1 to 8); 19 (1 to 8); 20 (1 to 7, 8_suppl); 21 (1 to 8); 22 (1_suppl, 2 to 8); 23 (1 to 8); 24 (1 to 3 to 5 to 8); 25 (1 to 8); 26 (1 to 8); 27 (1 to 10); 28 (1 to 10); 29 (1 to 10); 30 (1 to 10); 31 (1 to 10); 32 (1_suppl, 2 to 11); 33 (1 to 10); 34 (1_suppl, 2 to 10); 35 (1_suppl, 2 to 10); 36 (1_suppl, 2 to 10); 37 (1_suppl, 2 to 10); 38 (1_suppl, 2 to 10); 39 (1 to 3 to 10); 40 (1 to 3)
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CLOCKSS Archive
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In Progress
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2026-04-06
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1 to 21, 30 to 40
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LOCKSS Archive
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In Progress
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2026-04-06
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1 to 16, 39, 40
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Portico
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Preserved
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2026-04-02
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Preserved : 1987: 1(1-2), 1988: 2(1-2), 1989: 3(1-4), 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-4), 1993: 7(1-4, 4, S), 1994: 8(1-4), 1995: 9(1-4), 1996: 10(1-4), 1997: 11(1-6), 1998: 12(1-6), 1999: 13(1-6), 2000: 14(1-6), 2001: 15(1-6), 2002: 16(1-6), 2003: 17(1-8), 2004: 18(1-8), 2005: 19(1-8), 2006: 20(1-8), 2007: 21(1-8), 2008: 22(1, 1, S, 2, 2, S, 3-8), 2009: 23(1-8), 2010: 24(1-8), 2011: 25(1-8), 2012: 26(1-8), 2013: 27(1-10), 2014: 28(1-10), 2015: 29(1-10), 2016: 30(1-10), 2017: 31(1-10), 2018: 32(1, 1, S, 2-11), 2019: 33(1-10), 2020: 34(1, 1, S, 2-10), 2021: 35(1, S, 2-10), 2022: 36(1, 1, S, 2-10), 2023: 37(1, 1, S, 2-10), 2024: 38(1, 1, S, 2-10), 2025: 39(1, 1, S, 2, 2, S, 3-10), 2026: 40(1-3)
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LOCKSS Archive
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Preserved
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2026-04-06
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17 to 38
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CLOCKSS Archive
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Preserved
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2026-04-06
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22 to 29
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Library of Congress
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Preserved
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2025-04-07
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24 (4_suppl, 1 to 8); 25 (1 to 8); 26 (1 to 8); 27 (1 to 10); 28 (1 to 10); 29 (1 to 10); 30 (1 to 10); 31 (1 to 10); 32 (1_suppl, 1 to 11); 33 (1 to 10); 34 (1_suppl, 1 to 10); 35 (1_suppl, 1 to 10); 36 (1_suppl, 1 to 10); 37 (1_suppl, 1 to 10); 38 (1_suppl, 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 : 1 (1, 2); 2 (1, 2); 3 (1-4); 4 (1-4); 5 (1, 3, 4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1-6); 17 (1-8); 18 (1-8); 19 (1-8); 20 (1-8); 21 (1-8); 22 (1-6); 23 (2-8); 24 (1-8); 25 (1-6); 26 (1, 3-8); 27 (1-10); 28 (1-10); 29 (1-10); 30 (1-10); 31 (1-10); 32 (1-11); 33 (1-6, 8, 9)
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British Library
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Preserved
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2019-09-18
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Preserved : 28 (1 to 10), 29 (1 to 10), 30 (1 to 10), 31 (1 to 10), 32 (1 to 9)
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