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Portico
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Preserved
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2026-04-16
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Preserved : 1989: 26(1), 1990: 27(1-6), 1991: 28(1-6), 1992: 29(1-6), 1993: 30(1-8), 1994: 31(1-8), 1995: 32(1-10), 1996: 33(1-10), 1997: 34(1-10), 1998: 35(1-10), 1999: 36(1-10), 2000: 37(1-10), 2001: 38(1-10), 2002: 39(1-10), 2003: 40(1, S 1, 2-10), 2004: 41(1-10), 2005: 42(1-10), 2006: 43(1-10), 2007: 44(1-10), 2008: 45(1-10), 2009: 46(1-6), 2010: 47(1-6), 2011: 48(1-6), 2012: 49(1-6), 2013: 50(1-6), 2014: 51(1-6), 2015: 52(1-6), 2016: 53(1-6), 2017: 54(1-6), 2018: 55(1-6), 2019: 56(1-3, 5-6), 2020: 57(1-6), 2021: 58(1-4)
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Internet Archive
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Preserved
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2025-08-08
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27 to 46
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CLOCKSS Archive
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Preserved
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2026-04-13
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26 to 58, 2020
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2); 2; 4 (1); 26; 27 (2 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 8); 31 (1 to 8); 32 (1 to 10); 33 (1 to 10); 34 (1 to 10); 35 (1 to 10); 36 (1 to 10); 37 (1 to 10); 38 (1 to 10); 39 (Supplement, 1 to 10); 40 (Supplement, 1 to 10); 41 (1 to 10); 42 (1 to 10); 43 (1 to 10); 44 (1 to 12); 45 (Supplement, 1-2, 2 to 10); 46 (Supplement, 1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1, 2, 4 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1, 3 to 6); 54 (1 to 3); 55 (1 to 6); 56 (1 to 3, 5); 57 (3 to 6); 58 (1 to 4); 2020 (9, 11)
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Portico
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Preserved
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2026-04-16
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Preserved : 2018: 55(1-6), 2019: 56(1-3, 5-6), 2020: 57(1-6), 2021: 58(1-3, 6), 2022: 59(1-3), 2023: 60(1-3), 2024: 61(1-3), 2025: 62(1-2), 2026: 63(1)
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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 : 26 (1); 27 (2-6); 28 (1-6); 29 (1-6); 30 (1-8); 31 (1-8); 32 (1-10); 33 (1-10); 34 (1-10); 35 (1-10); 36 (1-10); 37 (1-10); 38 (1-10); 39 (1-10); 40 (S1, 1-10); 41 (1-10); 42 (1-10); 43 (1-10); 44 (1-10); 45 (1-10); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (C, 1-6); 52 (1-6); 53 (1-6); 54 (1-5); 55 (1-6); 56 (1, 2); 72 (3)
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