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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, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1 to 3); 6 (1 to 3); 7 (1 to 4); 8 (1, 2-3, 4); 9 (1, 2-4); 10 (1 to 4, 5-6); 11 (s1, 1-2, 3-4, 4, 5-6); 12 (1 to 4, 5-6); 13 (1 to 6); 14 (1 to 4, 5-6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 3, 4-5, 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 8); 42 (sup1, 1 to 8); 43 (sup1, 1 to 10); 44 (1 to 12); 45 (sup1, 1 to 12); 46 (1 to 12); 47 (sup1, 1 to 12); 48 (1 to 12); 49 (sup1, 1 to 12); 50 (sup1, 1 to 12); 51 (sup1, 1 to 12); 52 (sup1, 1 to 12); 53 (sup1, 1 to 12); 54 (sup1, 1 to 12); 55 (sup1, 1 to 12); 56 (sup1, 1 to 12); 57 (sup1, 1 to 12); 58 (sup1, 1 to 12); 59 (sup1, 1 to 12); 60 (S1, 1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1, 2, 4 to 12); 64 (sup1, 1 to 12)
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Portico
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Preserved
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2026-04-09
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Preserved : 1973: 12(4), 1974: 13(2-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1976: 15(4), 1977: 16(1-3), 1978: 17(1, 3), 1979: 18(4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1985: 24(1), 1986: 25(2-3), 1987: 26(4)
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Portico
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Preserved
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2026-04-09
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Preserved : 2003: 42(S 1), 2004: 43(10)
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Portico
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Preserved
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2026-04-09
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Preserved : 2009: 48(6, 11-12), 2009/2010: 49(1, S 1, 2-12), 2011: 50(1, S 1, 2-12), 2012: 51(1, 3-12), 2013: 52(1, S 1, 2, S 2, 3-12), 2014: 53(1, S 1, 2, S 2, 3-12), 2015: 54(1, S 1, 2-9)
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CLOCKSS Archive
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Preserved
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2026-04-06
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ahead-of-print, 41 to 64
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LOCKSS Archive
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Preserved
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2026-04-06
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41 to 63
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LOCKSS Archive
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In Progress
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2026-04-06
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64
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Portico
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Preserved
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2026-04-09
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Preserved : 1997: 26(4), 1997: 36(1-6), 1998: 37(1-6), 1999: 38(1-6), 2000: 39(1-6), 2001: 40(1-6), 2002: 41(1-8), 2003: 42(1-8), 2004: 43(1-10)
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Portico
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Preserved
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2026-04-09
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Preserved : 2005: 44(1-12), 2006: 45(1-12), 2007: 46(1-12), 2008: 47(1-12), 2008: 47 Suppl 1, 2008: 47 Suppl 2, 2009: 48(1-12), 2010: 49(1-12), 2011: 50(1-12), 2012: 51(1-12), 2013: 52(1-12), 2014: 53(1-12), 2015: 54(1-12), 2016: 55(1-12), 2017: 56(1-12), 2018: 57(1-12), 2019: 58(1-12), 2020: 59(1-12), 2021: 60(1-12), 2022: 61(1-12), 2023: 62(1-12), 2024: 63(1-12), 2025: 64(1-12)
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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 (sup1, 1 to 9, 11, 12); 6 (S1, 1 to 9, 11, 12); 41 (1 to 8); 42 (sup1, 1 to 8); 43 (1 to 9); 44 (1 to 9, 11, 12); 45 (sup1, 1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (sup1, 1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (sup1, 1 to 9, 11, 12); 51 (sup1, 1 to 9, 11, 12); 52 (sup1, 1 to 9, 11, 12); 53 (sup1, 1 to 9, 11, 12); 54 (sup1, 1 to 9, 11, 12); 55 (sup1, 1 to 9, 11, 12); 56 (sup1, 1 to 9, 11, 12); 57 (sup1, 1 to 9, 11, 12); 58 (sup1, 1 to 9, 11, 12); 59 (sup1, 1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 9, 11, 12); 64 (1, 2, 4)
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Library of Congress
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Preserved
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2025-04-07
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49 (sup1, 1 to 12); 50 (sup1, 1 to 12); 51 (sup1, 1 to 12); 52 (sup2, sup1, 1 to 12); 53 (sup1, sup2, 1 to 12); 54 (sup1, sup2, 1 to 12); 55 (sup2, sup3, sup1, sup4, 1 to 12); 56 (sup1, sup2, 1 to 12); 57 (sup2, sup4, sup3, sup1, 1 to 12); 58 (sup1, 1 to 12); 59 (sup1, 1 to 12); 60 (S2, S1, 1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1 to 11)
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