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Portico
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Preserved
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2026-04-09
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Preserved : 2012: 9(1-12), 2013: 10(1-12), 2014: 11(1-12), 2015: 12(1-12), 2016: 13(1-12), 2017: 14(1-12), 2018: 15(1-12), 2019: 16(1-12), 2020: 17(1-12), 2021: 18(1-12), 2022: 19(1-12), 2023: 20(1-12), 2024: 21(1-12), 2025: 22(1-4), 2026: 23(1)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 9 (5 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1, 2, 3-4, 5 to 8, 9-10, 11-12); 17 (1-2, 3-4, 5 to 12); 18 (1 to 12); 19 (1-2, 3-4, 5 to 12); 20 (1 to 3, 4-6, 7-9, 10-12); 21 (1-3, 4-6, 7-9, 10-12); 22 (1 to 4); 23 (1)
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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 : 2 (1); 3 (2-6); 4 (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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7 (2 to 12); 8 (1 to 12); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 9, 11, 12); 14 (1, 3 to 5, 8 to 11); 15 (5, 6, 8 to 12); 16 (1 to 3-4, 5, 7 to 9-10, 11-12); 17 (1-2, 3-4, 7 to 12); 18 (2 to 10); 19 (1-2, 3-4, 5 to 12); 20 (1, 7-9); 21 (4-6)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 6, 8 to 23
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