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