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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 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (01, 2 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1, 2, 4); 27 (1 to 4); 28 (1 to 4); 29 (1, 3 to 5); 30 (1 to 5); 31 (1 to 5); 32 (none); 33; 34; 35; 36; 37; 38; 39; 40
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Portico
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Preserved
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2026-04-02
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Preserved : 1984: 1(1-4), 1987: 2(1-4), 1988: 3(1-4), 1989: 4(1-4), 1990: 5(1-4), 1991: 6(1-4), 1992: 7(1-4), 1993: 8(1-4), 1994: 9(1-4), 1995: 10(1-4), 1996: 11(1-4)
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Portico
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Preserved
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2026-04-02
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Preserved : 2007: 22(3-4), 2008: 23(1-4), 2009: 24(1-4), 2010: 25(1-4), 2011: 26(1-4), 2012: 27(1-4), 2012/2013: 28(1-4), 2013/2014: 29(1-5), 2013/2015: 30(1-5), 2016/2017: 31(1-5), 2017: 32, 2018: 33, 2019: 34, 2020: 35, 2021: 36, 2022: 37, 2023: 38, 2024: 39, 2025: 40
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CLOCKSS Archive
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Preserved
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2026-03-30
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1 to 12, 14, 15, 22 to 40
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Library of Congress
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Preserved
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2025-04-07
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25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 5); 30 (1 to 5); 31 (1 to 5); 32 (); 33 (2018); 34 (2019); 35 (2020); 36 (2021); 37 (2022); 38 (2023); 39 ((2024))
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