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Portico
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Preserved
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2026-02-12
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Preserved : 2008: 1(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 2(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2013: 6, 2014: 7, 2015: 8, 2016: 9, 2017: 10, 2018: 11, 2019: 12, 1921: 13, 2021: 14, 2022: 15, 2023: 16, 2024: 17, 2025: 18, 2026: 19
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 19
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Library of Congress
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Preserved
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2025-04-07
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1; 2; 3 (1 to 4); 4 (1 to 4); 5 (1, 2-3, 4); 6 (2013); 7 (December 2014); 8 (2015); 9 (2016); 10 (2017); 11 (2018); 12 (2019); 13 (2020); 14 (2021); 15 (2022); 16 (2023); 17 ((2024)); 18 ()
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1, 2-3, 4); 6; 7; 8; 12; 13; 14; 15; 16; 17; 18; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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