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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, 3); 2 (1 to 3); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (2 to 4); 7 (2 to 4); 8 (1 to 4); 9 (1, 3, 4); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 5); 16 (4 to 6)
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Portico
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Preserved
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2026-04-16
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Preserved : 2004: 1(1-3), 2005: 2(1-3), 2006: 3(1-3), 2007: 4(1-3), 2008: 5(1-3), 2009: 6(1, 4), 2010: 7(1-4), 2011: 8(1-4), 2012: 9(1-4), 2013: 10(1-6), 2014: 11(1-6), 2015: 12(1-6), 2016: 13(1-6), 2017: 14(1-6), 2018: 15(1-4), 2019: 16(1-6), 2020: 17(1-6), 2021: 18(1-6), 2021/2022: 19(1-6), 2022/2023: 20(1-6), 2023/2024: 21(1-6), 2023/2025: 22(1-6)
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Portico
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Preserved
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2026-04-16
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Preserved : 2004: 1(1-3), 2005: 2(1-3), 2006: 3(1-3), 2007: 4(1-3)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 4
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Library of Congress
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Preserved
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2025-04-07
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9 (2); 14 (1); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (3-4, 5-6); 21 (1-2, 3-4, 5-6)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 1 (1-3); 2 (1-3); 3 (1-3); 4 (1-3); 5 (1-3); 6 (1-4); 7 (1-4); 8 (1-4)
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