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Portico
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Preserved
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2026-04-30
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Preserved : 2001: 50(1-8), 2002: 51(1-6), 2003: 52(1-6), 2004: 53(1-6), 2005: 54(1-6), 2006: 55(1-6), 2007: 56(1-6), 2008: 57(1-6, ), 2009: 58(1-6), 2010: 59(1-6), 2011: 60(1-6), 2012: 61(1-6), 2013: 62(1-6), 2014: 63(1-6), 2015: 64(1, S 1, 2-6), 2016: 65(1-6), 2017: 66(1-6), 2018: 67(1-6), 2019: 68(1-6), 2020: 69(1-6), 2021: 70(1-5, 5, S, 6), 2022: 71(1-6), 2023: 72(1-6), 2024: 73(1-6), 2025: 74(2-6), 2026: 75(1-2)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 50 (1 to 6, 7-8); 51 (1 to 6); 52 (Supplement, 1 to 6); 53 (Supplement, 1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (Supplement, 1 to 6); 57 (Supplement, 1 to 6); 58 (Supplement, 1 to 6); 59 (Supplement, 1 to 6); 60 (1 to 6); 61 (1 to 6); 62 (2 to 6); 63 (Supplement, 1 to 5); 64 (Supplement, 1 to 6); 65 (1 to 3, 5, 6); 66 (1 to 6); 67 (2 to 6); 68 (1 to 6); 69 (1, 2, 4 to 6); 70 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1)
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CLOCKSS Archive
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Preserved
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2026-05-04
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50 to 75
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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 : 15 (6); 50 (1-6, 7-8); 51 (1-6); 52 (1-6); 53 (S1, 1-6); 54 (1-6); 55 (1-6); 56 (S1, 1-6); 57 (S1, 1-6); 58 (S1, 1-6); 59 (S1, 1-6); 60 (1-6); 61 (1-6); 62 (1-6); 63 (1-6); 64 (S1, 1-6); 65 (1-6); 66 (1-6); 67 (1-6); 68 (1-5)
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