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Portico
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Preserved
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2026-04-23
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Preserved : 2014: 17(1), 2015/2016: 18(1-2), 2016/2017: 19(1-2), 2017: 20(1-2), 2018: 21(1-2), 2019/2020: 22(1-2), 2020/2021: 23(1-2), 2022: 24(1), 2023: 25(1), 2024: 26(1, S 1), 2025: 27(1)
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LOCKSS Archive
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Preserved
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2026-04-13
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17 to 27
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CLOCKSS Archive
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In Progress
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2026-04-13
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17 to 28
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LOCKSS Archive
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In Progress
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2026-04-13
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28
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 22 (1, 2); 23 (1, 2); 24 (1); 25; 26 (s1, 1); 27
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Public Knowledge Project PLN
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Preserved
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2026-04-24
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Preserved : 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1); 25; 26 (S1, 1); 27 (2)
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Library of Congress
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Preserved
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2025-04-07
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17 (1); 18 (1, 2); 19 (1, 2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1); 25 (1); 26 (s1, 1)
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