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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 15 (1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 2014; 2015; 2016
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Portico
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Preserved
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2026-02-12
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Preserved : 2017: 18(1-4), 2018: 19(1-4), 2019: 20(1-4), 2020: 21(1-4), 2021: 22(1-4), 2022: 23(1-4), 2023: 24(1-4), 2024: 25(1-4), 2025: 26(1-3)
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CLOCKSS Archive
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Preserved
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2026-02-09
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15, 16
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LOCKSS Archive
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Preserved
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2026-02-09
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15 to 17
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Portico
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Preserved
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2026-02-12
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Preserved : 2014: 15(1-6), 2015: 16(1-2, 4-6), 2016: 17(1-6)
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CLOCKSS Archive
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In Progress
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2026-02-09
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17
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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 : 15 (1-6); 16 (1-4); 17 (1-6)
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British Library
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Preserved
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2019-09-18
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Preserved : 15 (1 to 5), 16 (1 to 6), 17 (1 to 6)
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