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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4)
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LOCKSS Archive
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Preserved
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2026-04-06
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6 to 14, 16, 17
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CLOCKSS Archive
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Preserved
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2026-04-06
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7 to 14, 16 to 18
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Portico
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Preserved
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2026-04-02
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Preserved : 2009: 5(4), 2010: 6(2-4), 2011: 7(1-4), 2012: 8(1-7), 2013: 9(1-5, 7), 2014: 10(1-8), 2015: 11(1, S 1, 2, 4, 6-8), 2016: 12(1, 3-8), 2017: 13(1-4, 6), 2018: 14(3-9, 11-12), 2019: 15(1-9), 2020: 16(2, 4-7), 2021: 17(1-3, 5, 7), 2022: 18(1, 3, 5, 7-8), 2023: 19(1, S 1, 2, S 2, 3-7), 2024: 20(1, S 1, 2, 4-7), 2025: 21(1, S 1, 2-7)
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CLOCKSS Archive
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Preserved
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2026-04-06
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11 to 14, 18 to 22
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