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Portico
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Preserved
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2026-04-16
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Preserved : 2010: 3(3), 2011: 4, 2011: 5, 2012: 6, 2012: 7, 2012: 8, 2012: 9, 2013: 10
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Portico
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Preserved
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2026-04-16
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Preserved : 2014: 13(1), 2015: 14(1), 2016: 15(1), 2016: 16(1), 2016: 17(1), 2017: 18(1), 2017: 19(1), 2017: 20(1), 2017: 21(1), 2018: 22(1), 2019: 23(1-3), 2020: 24(1-3), 2021: 25(1), 2022: 26(1), 2023: 27(1), 2024: 28(1), 2025: 29(1), 2026: 30(1)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23 (2, 3); 24 (1 to 3); 25 (1); 26; 27; 28; 29; 30
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Public Knowledge Project PLN
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Preserved
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2026-04-20
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Preserved : 1
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Library of Congress
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Preserved
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2025-04-07
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13 (1); 14 (1); 17 (1); 18 (1); 19 (1); 20 (1); 21 (1); 22 (1); 23 (1 to 3); 24 (1); 26 (1); 27 (1); 28 (1)
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