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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 13 (1, 2); 14 (1, 2); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25; 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1990: 1(1-2), 1991: 2(1-2), 1992: 3(1-2), 1993: 4(1-2), 1994: 5(1-2), 1995: 6(1-2), 1996: 7(1-2), 1997: 8(1-2), 1998: 9(1-2), 1999: 10(1-2), 2000: 11(1-2), 2001: 12(1-2)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 35
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Portico
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Preserved
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2026-04-09
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Preserved : 2007: 18(2), 2008: 19(1-2), 2009: 20(1-2), 2010: 21(1-2), 2011: 22(1-2), 2012: 23(1-2), 2013: 24(1-2), 2014: 25(1-2), 2015: 26(1-2), 2016: 27(1-2), 2017: 28(1-2), 2018: 29(1-2), 2019: 30(1-2), 2020: 31(1-2), 2021: 32(1-2), 2022: 33(1-2), 2023: 34(1-2), 2024: 35(1-2)
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Library of Congress
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Preserved
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2025-04-07
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30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1)
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