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CLOCKSS Archive
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Preserved
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2026-02-09
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2 to 5
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Portico
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Preserved
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2026-02-12
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Preserved : 2015: 1(1), 2015: 2(1), 2016: 3(1), 2017: 4(1), 2018: 5(1)
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Library of Congress
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Preserved
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2025-04-07
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5 (1); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1-2, 3); 10 (1, 3); 11 (1 to 3); 12 (1)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 2; 3; 4
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 2; 3; 4
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 3; 4; 5
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 3; 4; 5
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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 : 1; 2; 3; 4; 5
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 6 (2); 2019
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Portico
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Preserved
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2026-02-12
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Preserved : 2015: 2(1), 2016: 3(1), 2017: 4(1), 2018: 5(1), 2019: 6(1-2), 2020: 7(1-2), 2021: 8(1-2), 2022: 9(1-3), 2023: 10(1-3), 2024: 11(1-3), 2024/2025: 12(1-3)
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