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Portico
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Preserved
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2026-04-23
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Preserved : 1986: 1(1-4), 1987: 2(1-4), 1988: 3(1-4, S), 1989: 4(1-4, S), 1990: 5(1-4, S), 1991: 6(1-4, S), 1992: 7(1, S 1, 2-4), 1993: 8(1-6), 1994: 9(1-6), 1995: 10(1, S 1, 2-6, S), 1996: 11(1-8), 1997: 12(1-8), 1998: 13(1-8), 1999: 14(1-8), 2000: 15(1-8), 2001: 16(1-8), 2002: 17(1-8), 2003: 18(1-8, S, ), 2004: 19(1-8), 2005: 20(1, S 1, 2, S 2, 3, S 3, 4-8), 2006: 21(1-8), 2007: 22(1-8), 2008: 23(1-8), 2009: 24(1-8), 2010: 25(1-8), 2011: 26(1-8), 2012: 27(1-10), 2013: 28(1-10), 2014: 29(2-12), 2015: 30(1-12), 2016: 31(1-12), 2017: 32(1-12), 2018: 33(1-12), 2019: 34(1-7, 7, S, 8-12), 2020: 35(1-3, 3, S, 4-6, 6, S, 7, 7, S, 8-12), 2021: 36(1)
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Portico
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Preserved
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2026-04-23
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Preserved : 2021: 36(3-11), 2022: 37(1-6, 6, S, 7, 7, S, 8, 8, S, 9-12), 2023: 38(1-4, 6, 6, S, 7, 7, S, 7, S 2-12), 2024: 39(1-12), 2025: 40(1-12), 2025/2026: 41(1-5)
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CLOCKSS Archive
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Preserved
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2026-04-27
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1 to 41
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1 to 4); 2 (1 to 4); 3 (Supplement, 1 to 4); 4 (Supplement, 1 to 4); 5 (Supplement, 1 to 4); 6 (Supplement, 1 to 4); 7 (Supplement, 1 to 4); 8 (1 to 6); 9 (1 to 6); 10 (Supplement, 1 to 6); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (3 to 8); 16 (1 to 7, 8b); 17 (1 to 3 to 5 to 8); 18 (Supplement, 1 to 8); 19 (1 to 8); 20 (Supplement, 1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (1 to 8); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8, 10); 28 (Supplement, 1 to 10); 29 (Supplement, 1 to 12); 30 (Supplement, 1 to 12); 31 (1, 6); 32 (2, 4 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 5, 9, 11, 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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4 to 26
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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 : 1 (1-4); 2 (1-4); 3 (S, 1-4); 4 (S, 1-4); 5 (S, 1-4); 6 (S, 1-4); 7 (S1, 1-4); 8 (1-6); 9 (1-6); 10 (S1, 1-6); 11 (1-8); 12 (1-8); 13 (1-8); 14 (1-8); 15 (1-8); 16 (1-8); 17 (1-8); 18 (S, 1-8); 19 (1-8); 20 (S1, 1-8); 21 (1-8); 22 (1-8); 23 (1-8); 24 (1-8); 25 (1-8); 26 (1-8); 27 (1-10); 28 (1-10); 29 (1-12); 30 (1-12); 31 (1-12); 32 (1-12); 33 (1-8, 10-12); 34 (1-11); 305 (2)
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