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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 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 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 6); 18 (1 to 4, 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 3, 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (1, 2, 4 to 10); 29 (1 to 6, 8); 30 (1, 2, 6, 7, 9, 10); 31 (1 to 4, 7, 9); 32 (1, 2, 4 to 10); 33 (1); 34 (5 to 10); 35 (none)
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Portico
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Preserved
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2026-04-16
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Preserved : 1991: 1(1-3), 1992: 2(1-4), 1993: 3(1-4), 1994: 4(1-4), 1995: 5(1-4), 1996: 6(1-4)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 6, 8 to 14, 16 to 36
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Portico
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Preserved
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2026-04-16
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Preserved : 2001: 11(6)
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Portico
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Preserved
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2026-04-16
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Preserved : 2006: 16(5), 2007: 17(4-6), 2008: 18(1-6), 2009: 19(1-6), 2010: 20(1-6), 2010/2011: 21(1-6), 2011/2012: 22(1-6), 2012/2013: 23(1-6), 2013/2014: 24(1-6), 2014/2015: 25(1-8), 2014/2016: 26(1-8), 2015/2016: 27(1-8), 2016/2017/2018: 28(1-10), 2017/2018/2019: 29(1-10), 2020: 30(1-10), 2021: 31(1-10), 2022: 32(1-10), 2023: 33(1-10), 2024: 34(1-10)
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Portico
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Preserved
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2026-04-16
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Preserved : 2026: 35, 2026: 36
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Library of Congress
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Preserved
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2025-04-07
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20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (1, 2, 4 to 8, 10); 29 (1, 3 to 6, 8); 30 (1, 2, 6, 7, 9, 10); 31 (1 to 4, 7, 9); 32 (1, 2, 4 to 10); 33 (1); 34 (5 to 7)
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