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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 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (2 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 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 3, 5, 6); 24 (1 to 6); 25 (1 to 6); 26 (2 to 6); 27 (1); 28 (5); 31 (1); 32 (3)
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Portico
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Preserved
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2026-04-23
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Preserved : 1993: 1(1-4), 1994: 2(1-4), 1995: 3(1-4), 1996: 4(1-4), 1997: 5(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, 14 to 28, 31, 32
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Portico
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Preserved
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2026-04-23
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Preserved : 2007: 15(4), 2008: 16(1-4), 2009: 17(1-4), 2009/2010: 18(1-4), 2010: 19(1-4), 2011: 20(1-4), 2011/2012: 21(1-4), 2013: 22(1-4), 2013/2014/2015: 23(1-6), 2015/2016: 24(1-6), 2016/2017: 25(1-6), 2017/2018/2019: 26(1-6), 2018/2019: 27(1-6), 2020: 28(1-6), 2021: 29(1-6), 2022: 30(1-6), 2023: 31(1-6), 2024: 32(1-6)
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Library of Congress
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Preserved
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2025-04-07
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17 (1); 18 (1); 19 (1); 20 (1); 21 (1)
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