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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1-2, 3-4); 2 (, 1-4); 3 (, 1-2, 3-4); 4 (, 1-2, 3-4); 5 (, 1-4); 6 (, 1-4); 7 (, 1-4); 8 (, 1-2, 3-4); 9 (, 1-2, 3-4); 10 (, 1-2, 3-4); 11-12 (, 1-4); 13 (, 1-2, 3, 4); 14 (, 1-4); 15 (, 1, 2-4); 16-17 (, 1-4); 18 (, 1-2, 3-4); 19 (, 1, 2, 3-4); 20 (, 1-4); 21 (, 1-3, 4); 22 (, 1-2, 3-4); 23 (, 1-4); 24 (, 1-4); 25 (, 1-4); 26 (, 1-4); 27 (, 1-4); 28 (, 1-4); 29 (, 1-2, 3-4); 30-31 (, 1-4); 32 (, 1-2, 3-4); 33 (, 1-4); 34 (, 1-4); 35 (, 1-2, 3-4); 36 (, 1-4); 37 (, 1, 2-4); 38 (, 1-3, 4); 39 (, 1-2, 3-4); 40 (, 1-4); 41 (, 1-4); 42-43 (, 1-4); 44 (, 1-2, 3, 4); 45 (, 1-4); 46 (, 1-2, 3-4); 47 (, 1-2, 3-4); 48 (, 1-4); 49 (, 1-2, 3-4); 50 (, 1-4); 51 (, 1-4); 52 (, 1-2, 3 to 5, 6-7, 8 to 12, 13-20); 53 (, 1-2, 3-4, 5-6, 7-10, 11-12, 13-14, 15-18, 19-20); 54 (, 1-4, 5-7, 8-9, 10-12, 13-15, 16-18, 19-20); 55 (, 1-2, 3-4, 5-6, 7-10, 11-13, 14-15, 16-18, 19-20); 56 (, 1-8, 9, 11, 12, 13-14, 15-17, 18-20); 57 (, 1-4, 5, 6-9, 10-13, 14-16, 17-20); 58 (, 1, 2-3, 4-6, 7-9, 10-11, 12-13, 14-17, 18-20); 59 (, 1, 2-4, 5-7, 8-9, 10-12, 13-14, 15-16, 17-18, 19-20); 60 (, 1-2, 3-5, 6-7, 8, 9-11, 12-14, 15-16, 17-18, 19-20); 61 (, 1-2, 3-4, 5-6, 7-8, 9-11, 12-13, 14, 15-17, 18-19, 20); 62 (, 1-4, 5-6, 7-11, 12-16, 17-20); 63 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-14, 15-18, 19-20); 64 (, 1-2, 3-4, 5-6, 7-8, 9-12, 13-16, 17-20); 65 (, 1-4, 5-6, 7-8, 9-12, 13-16, 17-18, 19-20); 66 (, 1-4, 5-8, 9, 13-14, 15-16, 17-18, 19-20); 67 (, 1-4, 9-12, 13-14, 15-16, 17-18, 19-20); 68 (, 1, 3, 5, 9, 11, 13); 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 11, 13 to 16, 18 to 30, 32 to 42, 44 to 61
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 11, 13 to 16, 18 to 30, 32 to 42, 44 to 69
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 4(1-4), 1998: 5(1-4), 1998: 6(1-4), 1999: 7(1-4), 1999: 8(1-4), 1999: 9(1-4), 2000: 10(1-4), 2000: 11-12(1-4), 2000: 11(1-4), 2000: 13(1-4), 2000: 14(1-4), 2001: 15(1-4), 2001: 16(1-4), 2002: 18(1-4), 2002: 19(1-4), 2002: 20(1-4), 2002: 21(1-4), 2003: 22(1-4), 2003: 23(1-4), 2003: 24(1-4), 2003: 25(1-4), 2003: 26(1-4), 2004: 27(1-4), 2004: 28(1-4), 2004: 29(1-4), 2004: 30(1-4), 2005: 32(1-4), 2005: 33(1-4), 2005: 34(1-4), 2005: 35(1-4), 2005: 36(1-4), 2006: 37(1-4), 2006: 38(1-4), 2006: 39(1-4), 2006: 40(1-4), 2006: 41(1-4), 2007: 42(1-4), 2007: 44(1-4), 2007: 45(1-4), 2007: 46(1-4), 2008: 47(1-4), 2008: 48(1-4), 2008: 49(1-4), 2008: 50(1-4), 2008: 51(1-4), 2009: 52(1-20), 2010: 53(1-20), 2011: 54(1-20), 2012: 55(1-13, 16-20), 2013: 56(1-11, 13-20), 2014: 57(1-20), 2015: 58(1-20), 2016: 59(1-20), 2017: 60(1-20), 2018: 61(1-20), 2019: 62(1-20), 2019/2020: 63(1-20), 2021: 64(1-20), 2022: 65(1-20), 2023: 66(1-20), 2024: 67(1-20), 2025: 68(1, 3, 5-9, 11, 13-20), 2026: 69(1-3)
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LOCKSS Archive
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In Progress
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2026-02-09
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62
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Library of Congress
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Preserved
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2025-04-07
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60 (12-14, 19-20); 61 (1-2, 3-4, 5-6, 7-8, 9-11, 12-13, 14, 15-17, 18-19, 20); 62 (1-4, 5-6, 7-11, 12-16, 17-20); 63 (1-2, 3-4, 5-6, 7-8, 9-10, 11-14, 15-18, 19-20); 64 (1-2, 3-4, 5-6, 7-8, 9-12, 13-16, 17-20); 65 (1-4, 5-6, 7-8, 9-12, 13-16, 17-18, 19-20); 66 (1-4, 5-8, 9-12, 13-14, 15-16, 17-18, 19-20); 67 (1-4, 5-8, 9-12, 13-14, 15-16, 17-18)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 1 (1, 3); 2 (1); 3; 4 (3); 5 (1); 6 (3, 6, 8, 9, 12, 15, 17, 19); 7 (1); 8 (3); 9 (1, 3); 11 (1); 13 (3, 4); 14 (1); 15 (2); 16 (1); 18 (3); 19 (1 to 3); 21 (1, 4); 22 (1, 3); 23 (1); 24; 25; 26; 27; 28; 29 (3); 32 (1, 3); 33 (1); 34; 35 (3); 36 (1); 37 (2); 38 (1, 4); 39 (1, 3); 41 (1); 42; 44 (3, 4); 45 (1); 46 (3); 47 (1, 3); 48 (1); 49 (3); 51 (1); 52 (3 to 6, 8, 9, 11 to 13); 53 (1, 3, 5, 7, 11, 13, 15, 19); 54 (1, 5, 8, 13, 16, 19); 55 (1, 3, 5, 7, 11, 14, 16, 19); 56 (1, 9, 11 to 13, 15, 18); 57 (1, 5, 6, 14, 17); 58 (1, 4, 7, 12, 14, 18); 59 (1, 2, 5, 8, 15, 17, 19); 61 (1-2, 2, 3-4, 5-6, 7-8, 9-11, 12-13, 14, 15-17, 18-19); 62 (1-4, 5-6, 7-11, 12-16, 17-2); 63 (1-2, 3-4, 5-6, 7-8, 9-1, 11-14, 15-18, 19-2); 64 (1-2, 3-4, 5-6, 7-8, 9-12, 13-16, 17-2); 65 (1-4, 5-6, 7-8, 9-12, 13-16, 17-18, 19-2); 66 (1-4, 5-8, 9-12, 13-14, 15-16, 17-18, 19-2); 67 (1, 5, 9, 13, 15, 17, 19)
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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 : 1 (1, 3); 2 (1); 3; 4 (3); 5 (1); 6 (3, 6, 8, 9, 12, 15, 17, 19); 7 (1); 8 (3); 9 (1, 3); 11 (1); 13 (3, 4); 14 (1); 15 (2); 16 (1); 18 (3); 19 (1 to 3); 21 (1, 4); 22 (1, 3); 23 (1); 24; 25; 26; 27; 28; 29 (3); 32 (1, 3); 33 (1); 34; 35 (3); 36 (1); 37 (2); 38 (1, 4); 39 (1, 3); 41 (1); 42; 44 (3, 4); 45 (1); 46 (3); 47 (1, 3); 48 (1); 49 (3); 51 (1); 52 (3 to 6, 8, 9, 11 to 13); 53 (1, 3, 5, 7, 11, 13, 15, 19); 54 (1, 5, 8, 13, 16, 19); 55 (1, 3, 5, 7, 11, 14, 16, 19); 56 (1, 9, 11 to 13, 15, 18); 57 (1, 5, 6, 14, 17); 58 (1, 4, 7, 12, 14, 18); 59 (1, 2, 5, 8, 15, 17, 19); 61 (1-2, 2, 3-4, 5-6, 7-8, 9-11, 12-13, 14, 15-17, 18-19); 62 (1-4, 5-6, 7-11, 12-16, 17-2); 63 (1-2, 3-4, 5-6, 7-8, 9-1, 11-14, 15-18, 19-2); 64 (1-2, 3-4, 5-6, 7-8, 9-12, 13-16, 17-2); 65 (1-4, 5-6, 7-8, 9-12, 13-16, 17-18, 19-2); 66 (1-4, 5-8, 9-12, 13-14, 15-16, 17-18, 19-2); 67 (1, 5, 9, 13, 15, 17, 19)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 57 (5, 6, 14, 17)
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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 : 57 (5, 6, 14, 17)
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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 : 4 (1, 3); 5 (1); 6; 7; 8 (3); 9 (1, 3); 10 (1, 3); 11-12 (1-4); 11; 13 (3, 4); 14 (1); 15 (2); 16-17 (1-4); 16; 18 (3); 19 (1-3); 20 (1); 21 (4); 22 (1, 3); 23 (1); 24; 25; 26; 27; 28; 29 (3-4); 30 (Supplement?); 30-31 (1-4); 32 (3-4); 33 (1-4); 34; 35 (3-4); 36 (1-4); 37 (2-4); 38 (1-3, 4); 39 (1-2, 3-4); 40 (1-4); 41; 42-43; 44 (3, 4); 45 (1-4); 46 (3-4); 47 (1-2, 3-4); 48 (1-4); 49 (3-4); 50 (1-4); 51; 52 (3-5, 6-7, 8-12, 13-20); 53 (1-2, 3-4, 5-6, 7-10, 11-12, 13-14, 15-18, 19-20); 54 (1-4, 5-7, 8-9, 10-12, 13-15, 16-18, 19-20); 55 (1-2, 3-4, 5-6, 7-10, 11-13, 14-15, 16-18, 19-20); 56 (1-8, 9-10, 11, 12, 13-14, 15-17, 18-20); 57 (1-4, 5, 6-9, 10-13, 14-16, 17-20); 58 (1, 2-3, 4-6, 7-9, 10-11, 12-13, 14-17, 18-20); 59 (1, 2-4, 5-7, 8-9, 10-12, 13-14, 15-16, 17-18, 19-20); 60 (1-2, 3-5, 6-7, 8, 9-11, 12-14, 15-16, 17-18, 19-20); 61 (1-2, 3-4, 5-6, 7-8, 9-11, 12-13, 14, 15-17, 18-19, 20); 62 (1-4, 5-6, 7-11, 12-16)
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