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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 1(1-4), 2011: 2(1-4), 2012: 3(1-4), 2013: 4(1-4), 2014: 5(1, S 1, 1, 2-4), 2015: 6(1-6), 2016: 7(1-5), 2017: 8(1-5), 2018: 9(1-6), 2019: 10(1-8), 2020: 11(1-8), 2021: 12(1-6), 2022: 13(1-6), 2023: 14(1-6), 2024: 15(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2025: 16(4-6), 2025: 17(1)
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CLOCKSS Archive
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In Progress
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2026-02-09
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1, 2, 9 to 14
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 14
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CLOCKSS Archive
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Preserved
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2026-02-09
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3 to 8
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Library of Congress
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Preserved
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2025-04-07
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1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (Supplement 1, 1 to 4); 6 (1 to 6); 7 (1 to 5); 8 (1 to 5); 9 (1 to 6); 10 (1 to 8); 11 (1 to 8); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6)
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