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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 (2 to 4); 3 (1 to 4); 4 (1, 2-3, 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 3); 9 (1); 10 (2); 11 (1, 2); 12 (1S, 2); 13 (1_suppl, 2); 14 (1, 2); 15 (1S, 2); 16 (1_suppl, 2); 17 (1, 2); 18 (1S, 2, 3); 19 (1_suppl, 2, 3); 20 (1 to 4); 21 (1 to 4); 22 (1, 2 to 4); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 8); 28 (1_suppl, 2 to 6, 8); 29 (1 to 3 to 8); 30 (1 to 8); 31 (1 to 6 to 8); 32 (1, 2-3, 4, 5, 6-7, 8); 33 (1, 2-3, 4, 5, 6-7, 8); 34 (1, 2-3, 4, 5, 6-7, 8); 35 (1, 2-3, 4, 5, 6-7, 8); 36 (1, 2-3, 4, 5, 6-7, 8); 37 (1, 2-3, 4, 5, 6-7, 8); 38 (1)
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CLOCKSS Archive
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In Progress
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2026-04-13
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1 to 16, 18, 29 to 38
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LOCKSS Archive
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In Progress
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2026-04-13
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1 to 11, 13, 14, 37, 38
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Portico
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Preserved
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2026-04-16
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Preserved : 1987: 1(1-4), 1988: 2(2-4), 1989: 3(1-4), 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-4), 1994: 7(1-4), 1995: 8(1-3)
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Portico
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Preserved
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2026-04-16
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Preserved : 1997: 9(1), 1998: 10(1-2), 1999: 11(1-2), 2000: 12(1-2), 2001: 13(1, 1, S, 2), 2002: 14(1-2), 2003: 15(1, 1, S, 2), 2004: 16(1, 1, S, 2), 2005: 17(1-2), 2006: 18(1-3), 2007: 19(1, 1, S, 2-3), 2008: 20(1-4), 2009: 21(1-4), 2010: 22(1-4), 2011: 23(1-6), 2012: 24(1-6), 2013: 25(1-4, 4, S, s4-5, 5, S, s5-6), 2014: 26(1-6), 2015: 27(1-8, 8, S), 2016: 28(1, 1, S, 2, 2, S, 3-5, 5, S, 6-8), 2017: 29(1-2, 2, S, 3-5, 5, S, 6-8), 2018: 30(1-8), 2019: 31(1-7, 7, S, 8, 8, S), 2020: 32(1-8), 2021: 33(4-8), 2022: 34(1-8), 2023: 35(1-8), 2024: 36(1-8), 2025: 37(1-8), 2026: 38(1-3)
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LOCKSS Archive
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Preserved
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2026-04-13
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12, 15 to 36
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CLOCKSS Archive
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Preserved
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2026-04-13
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17, 19 to 28
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Library of Congress
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Preserved
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2025-04-07
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22 (3_suppl, 1 to 4); 23 (2_suppl, 1 to 6); 24 (2 to 6); 25 (4_suppl, 5_suppl, 1 to 6); 26 (5_suppl, 1 to 6); 27 (8_suppl, 2_suppl, 1 to 5, 7, 8); 28 (1_suppl, 5_suppl, 2_suppl, 1 to 8); 29 (2_suppl, 5_suppl, 1 to 8); 30 (1 to 8); 31 (7_suppl, 8_suppl, 2 to 8); 32 (1, 2-3, 4 to 6-7, 8); 33 (1, 2-3, 4 to 6-7, 8); 34 (1, 2-3, 4 to 6-7, 8); 35 (1, 2-3, 4 to 6-7, 8); 36 (1, 2-3, 4 to 6-7, 8)
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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 : 12 (1S, 2); 13 (1S, 2); 14 (1, 2); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1-3); 19 (1-3); 20 (1-4); 21 (2-4); 22 (1-4); 23 (1-4, 6); 24 (2-6); 25 (1-6); 26 (1-6); 27 (1-8); 28 (1-8); 29 (1-8); 30 (1-8); 31 (1-6)
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British Library
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Preserved
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2019-09-18
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Preserved : 26 (1 to 6), 27 (1 to 3; 5 to 8), 28 (1 to 8), 29 (1 to 8), 30 (1 to 6)
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