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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 49 (1 to 8); 50 (, 1 to 8); 51 (, 1 to 8); 52 (, 1 to 8); 53 (, 1 to 5, 7, 8); 54 (, 1 to 8); 55 (, 1 to 3, 5 to 8); 56 (, 1 to 6, 7-8); 57 (, 1 to 6, 8); 58 (, 1 to 8); 59 (, 1 to 8); 60 (, 1, 4, 6, 8); 61 (, 1 to 8); 62 (, 1 to 8); 63 (, 1 to 8); 64 (, 1, 3 to 6); 65 (, 2 to 4); 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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10 to 13, 49 to 66
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Internet Archive
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Preserved
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2025-08-08
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16 to 20
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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 : 4 (8); 49 (S1, 1-8); 50 (S2, 1-8); 51 (S1, 1-8); 52 (S1, 1-8); 53 (S1, 1-8); 54 (1-8); 55 (1-8); 56 (1-6, 7-8); 57 (1-8); 58 (1-8); 59 (1-7)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 49(1, S 1, 2-8, S), 2010: 50(1, S 1, 2, S 2, 3-8), 2011: 51(1-8, S), 2012: 52(1-8, S), 2013: 53(1, S 1, 2-8), 2014: 54(1-8), 2015: 55(1-8), 2016: 56(1-8), 2017: 57(1-8), 2018: 58(1-8), 2019: 59(1-8), 2020: 60(1-7, 8, S), 2021: 61(1-6, 8, 8, S), 2022: 62(1-6, 6, S, 7-8), 2023: 63(1-8), 2024: 64(1-6, ), 2025: 65(1-6, ), 2026: 66(1)
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