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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 6 (1 to 10); 7 (1 to 6, 7-8, 9, 10); 8 (1-3, 4-5, 6-7, 8-9, 10); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 4, 5-6, 7 to 12); 13 (1 to 10); 14 (1 to 10); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 6); 42 (1, 2, 3-4, 5, 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1-2, 3-4, 5-6); 47 (1-2, 3-4, 5-6); 48 (1 to 6); 49 (1 to 5); 50 (6); 51 (3, 6); 54 (1 to 6); 56 (1 to 6); 57 (1 to 8); 58 (sup1, 1 to 4, 7, 10 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 6, 8 to 10, 12); 63 (1 to 14); 64 (1, 3 to 14); 65 (1 to 14); 66 (1 to 14); 67 (1 to 14); 68 (1 to 14); 69 (1 to 15); 70 (1); 71
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CLOCKSS Archive
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Preserved
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2026-04-13
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ahead-of-print, just-accepted, 6 to 14, 38 to 70
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LOCKSS Archive
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Preserved
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2026-04-13
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6 to 14, 38 to 71
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LOCKSS Archive
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In Progress
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2026-04-13
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72
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Portico
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Preserved
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2026-04-23
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Preserved : 1962: 6(1-6), 1963: 7(1-6), 1964: 8(1-3, 6-7), 1965: 9(1-6), 1966: 10(1-6), 1967: 11(1-6), 1968: 12(1-4)
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Portico
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Preserved
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2026-04-23
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Preserved : 1969: 13(1-6), 1970: 14(1-6), 1994: 38(1-6), 1995: 39(1-6), 1996: 40(1-6), 1997: 41(1-6), 1997/1998: 42(1-6), 1998: 43(1-6), 1999: 44(1-6), 2000: 45(1-6), 2001: 46(1-6), 2001: 47(1-6), 2002: 48(1-6), 2003: 49(1-6), 2004: 50(1-6), 2005: 51(1-6), 2006: 52(1-6), 2007: 53(1-6), 2008: 54(1-6), 2009: 55(1-6), 2010: 56(1-6), 2011: 57(1-8), 2012: 58(1-12), 2013: 59(1-12), 2014: 60(1-12), 2015: 61(1-12), 2016: 62(1-12), 2017: 63(1-14), 2018: 64(1-14), 2019: 65(1-14), 2020: 66(1-14), 2021: 67(1-14), 2022: 68(1-14), 2023: 69(1-15), 2024: 70(1), 2025: 71(1), 2026: 72(1)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 5 (2, 3, 4-5, 6); 6 (1 to 9, 11, 12); 7 (1); 41 (2 to 6); 42 (1, 2, 3-4, 5, 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1-2, 3-4, 5-6); 47 (1-2, 3-4, 5-6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 8); 58 (sup1, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 9, 11 to 14); 64 (1 to 9, 11 to 14); 65 (1); 66 (2, 4 to 6, 9, 11, 13, 14); 67 (1 to 9, 11 to 14); 68 (1 to 9, 11 to 14); 69 (1 to 9, 11 to 15)
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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 : 6 (1-10); 7 (1-6, 7-8, 9, 10); 8 (1-3, 4-5, 6-7, 8-9, 10); 9 (1-12); 10 (1-12); 11 (1-12); 12 (1-4, 5-6, 7-12); 13 (1-10); 14 (1-10); 22 (1); 38 (2-4, 6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1, 2, 3-4, 5, 6); 43 (1-6); 44 (1-6); 45 (1-6); 46 (1-2, 3-4, 5-6); 47 (1-2, 3-4, 5-6); 48 (1-6); 49 (1-6, 10); 50 (1-3, 4-5, 6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (1-6)
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Library of Congress
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Preserved
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2025-04-07
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56 (1 to 6); 57 (1 to 8); 58 (sup1, 1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1 to 14); 64 (1 to 14); 65 (1, 3 to 14); 66 (1 to 14); 67 (1 to 14); 68 (1 to 14); 69 (1 to 15)
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