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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 7(1-2), 2008: 8(1-2), 2009: 9(1-3), 2010: 10(1)
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ZBW - Leibniz Information Centre for Economics
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Preserved
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2025-12-15
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Preserved : 5:1;5:1;6:2;6:2;7:1 to 7:2;7:2;8:1 to 8:2;9:1 to 9:3;10:1 to 10:2;10:2;11:1 to 11:3;11:3;12:1 to 12:2;13:3;13:1 to 13:2;14:2;14:1 to 14:4;15:1;15:1 to 15:3;16:1;16:1 to 16:4;17:1;17:1 to 17:4;18:1 to 18:4;19:1 to 19:4;20:1;20:2 to 20:4;21:1 to 21:2;21:1 to 21:4;22:1;22:1 to 22:4
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 8 (1); 17 (, 3, 4); 18 (, 1 to 4); 19 (, 2, 3); 20 (, 1 to 3); 21 (, 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 3); 2008; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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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 : 1 (1, 2); 2 (1 to 4); 5 (1); 6 (2); 7 (1, 2); 8 (1, 2); 9 (1 to 3); 11 (1 to 3); 12 (1, 2); 13 (1 to 3); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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4; 5 (1); 14 (3, 4); 15 (1 to 4); 16 (1, 3, 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1, 2); 22 (4); 23 (1 to 4); 24 (1 to 4)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 5 (1); 7 (, 1, 2); 8 (, 1, 2); 9 (, 1 to 3); 10 (, 1, 2); 11 (, 1 to 3); 12 (, 1 to 3); 13 (, 1 to 3); 14 (, 1, 2, 4); 15 (, 1 to 4); 16 (, 1, 2); 20 (, 3, 4); 21 (, 1 to 3); 2005; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2020; 2021
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 5(1), 2006: 6(2), 2007/2008: 7(1-2), 2008: 8(1-2), 2009: 9(1-3), 2010: 10(1-2), 2011: 11(1-3), 2012: 12(1-2), 2012/2013: 13(1-3), 2013/2014: 14(1-4), 2014/2015: 15(1-4), 2015/2016: 16(1-4), 2017: 17(1-4), 2018: 18(1-4), 2019: 19(1-4), 2019/2020: 20(1-4), 2021: 21(1-4), 2022: 22(1-4), 2023: 23(1-4), 2024: 24(1-4), 2025: 25(1-4), 2026: 26(1)
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