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