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Portico
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Preserved
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2026-04-02
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Preserved : 2007: 1(1), 2008: 2(1-4), 2009: 3(1-4), 2010: 4(1-4), 2011: 5(1-4), 2012: 6(1-4), 2013: 7(1-4), 2014: 8(1-4), 2015: 9(1-4), 2016: 10(1-4), 2017: 11(1-4), 2018: 12(1-4), 2019: 13(1-4), 2020: 14(1-4), 2021: 15(1-4)
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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); 2 (2 to 4); 3 (1 to 4); 4 (1 to 4); 5 (2 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1, 2, 4); 15 (1 to 4)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 15
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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; 2 (2-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 33 (1); 384
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