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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 3); 6 (1 to 3); 7 (1-2, 3); 8 (1-2, 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1-3); 18; 19 (2-3); 20 (1 to 3); 21 (1-3); 22 (2, 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1-3); 27 (3); 28 (1 to 3); 29 (1-3); 30 (2, 3); 31 (1 to 3); 32 (1-3); 33 (2, 3); 34 (1, 2-3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 40 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1, 2-3); 44 (1-3); 45 (2, 3); 46 (1 to 3); 47 (1-3); 48 (2, 3); 49 (1-3); 50 (2, 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2-3); 56 (1, 2-3); 57 (1 to 3); 58 (1 to 3); 59 (1-3); 60 (2, 3); 61 (1 to 3); 62 (1 to 3); 63 (1 to 3); 64 (1-2, 3); 65 (1-2, 3); 66 (1-3); 67 (2, 3); 68 (1-3); 69 (2, 3); 70 (1-2, 3); 71 (1 to 3); 72 (1 to 3); 73 (1 to 3); 74 (1 to 3); 75 (1 to 3); 76 (1 to 3); 77 (1, 2-3); 78 (1 to 3); 79 (1 to 3); 80 (1 to 3); 81 (1 to 3); 82 (1-2, 3); 83 (1 to 3); 84 (1-2, 3); 85 (1 to 3); 86 (1 to 12); 87 (1, 2-3, 4 to 12); 88 (1 to 12); 89 (1 to 12); 90 (1 to 12); 91 (1 to 12); 92 (1 to 12); 93 (1 to 12); 94 (1 to 4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1991: 1(1-4), 1992: 2(1-4), 1993: 3(1-4), 1994: 4(1-4), 1995: 5(1-3), 1995: 6(1-3), 1996: 7(1-3), 1996: 8(1-3), 1996: 9(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 94
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Portico
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Preserved
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2026-04-02
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Preserved : 2006: 38(1), 2006: 39(2), 2007: 42(1, 3), 2007: 43(1-3), 2007: 44(1-3), 2007: 45(2-3), 2008: 48(3), 2008: 49(1-3), 2009: 50(1-3), 2009: 51(1-3), 2009: 52(1-3), 2009: 53(1-3), 2010: 54(1-3), 2010: 55(1-3), 2010: 56(1-3), 2010: 57(1-3), 2011: 58(1-3), 2011: 59(1-3), 2011: 60(1-3), 2011: 61(1-3), 2012: 62(1-2), 2012: 63(2-3), 2012: 64(1-3), 2012: 65(1-2), 2013: 66(1-3), 2013: 67(1-3), 2013: 68(1-3), 2013: 69(1-3), 2014: 70(1-3), 2014: 71(1-3), 2014: 72(1-3), 2014: 73(1-3), 2015: 75(1-3), 2015: 76(1-3), 2015: 77(1-3), 2016: 78(1-3), 2016: 79(1-3), 2016: 80(1-3), 2016: 81(1-3), 2017: 82(1-3), 2017: 83(1-3), 2017: 84(1-3), 2017: 85(1-3), 2018: 86(1-12), 2019: 87(1-12), 2019/2020: 88(1-12), 2021: 89(1-12), 2022: 90(1-12), 2023: 91(2-12), 2024: 92(1-12), 2025: 93(1-2, 4-12), 2025/2026: 94(1-4)
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LOCKSS Archive
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In Progress
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2026-04-06
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62 to 65
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LOCKSS Archive
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Preserved
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2026-04-06
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66 to 86
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Library of Congress
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Preserved
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2025-04-07
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86 (3 to 12); 87 (1, 2-3, 4 to 12); 88 (1 to 12); 89 (1 to 12); 90 (1 to 12); 91 (1 to 12); 92 (1 to 11)
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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 to 3); 2 (1 to 3); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1, 3); 8 (1 to 3); 9 (1 to 9, 11, 12); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1); 18; 19 (2); 21 (1); 22 (2, 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1); 27 (3); 28 (1 to 3); 29 (1); 31 (2, 3); 32 (1); 33 (2, 3); 34 (1, 2); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1, 2); 44 (1); 45 (2, 3); 46 (1 to 3); 47 (1); 48 (2, 3); 49 (1); 51 (2, 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2); 56 (1, 2); 57 (1 to 3); 58 (1 to 3); 59 (1); 61 (2, 3); 62 (1 to 3); 63 (1 to 3); 64 (1, 3); 65 (1, 3); 66 (1); 67 (2, 3); 68 (1); 69 (2, 3); 71 (1 to 3); 72 (1 to 3); 73 (1 to 3); 74 (1 to 3); 75 (1 to 3); 76 (1 to 3); 77 (1, 2); 78 (1 to 3); 79 (1, 2); 81 (1 to 3); 82 (1, 3); 83 (1 to 3); 84 (1, 3); 85 (1 to 3); 86 (1 to 9, 11, 12); 87 (1, 2-3, 4 to 9, 11, 12); 88 (1 to 9, 11, 12); 89 (1 to 9, 11, 12); 91 (1 to 9, 11, 12); 92 (1 to 9, 11, 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 : 1 (1 to 3); 2 (1 to 3); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1, 3); 8 (1 to 3); 9 (1 to 9, 11, 12); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1); 18; 19 (2); 21 (1); 22 (2, 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1); 27 (3); 28 (1 to 3); 29 (1); 31 (2, 3); 32 (1); 33 (2, 3); 34 (1, 2); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1, 2); 44 (1); 45 (2, 3); 46 (1 to 3); 47 (1); 48 (2, 3); 49 (1); 51 (2, 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2); 56 (1, 2); 57 (1 to 3); 58 (1 to 3); 59 (1); 61 (2, 3); 62 (1 to 3); 63 (1 to 3); 64 (1, 3); 65 (1, 3); 66 (1); 67 (2, 3); 68 (1); 69 (2, 3); 71 (1 to 3); 72 (1 to 3); 73 (1 to 3); 74 (1 to 3); 75 (1 to 3); 76 (1 to 3); 77 (1, 2); 78 (1 to 3); 79 (1, 2); 81 (1 to 3); 82 (1, 3); 83 (1 to 3); 84 (1, 3); 85 (1 to 3); 86 (1 to 9, 11, 12); 87 (1, 2-3, 4 to 9, 11, 12); 88 (1 to 9, 11, 12); 89 (1 to 9, 11, 12); 91 (1 to 9, 11, 12); 92 (1 to 9, 11, 12)
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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 : 7 (3); 8 (1-2, 3); 9 (1-3); 10 (1-3); 11 (1-3); 12 (1-3); 13 (1-3); 14 (1-3); 15 (1-3); 16 (1-3); 17 (1); 18; 19 (2); 20 (1-3); 21 (1); 22 (2, 3); 23 (1-3); 24 (1-3); 25 (1-3); 26 (1); 27 (3); 28 (1-3); 29 (1); 30 (2, 3); 31 (1-3); 32 (1); 33 (2, 3); 34 (1, 2-3); 35 (1-3); 36 (1-3); 37 (1-3); 38 (1-3); 39 (2, 3); 40 (1-3); 41 (2, 3); 42 (1-3); 43 (2-3); 44 (1-3); 45 (2, 3); 46 (1-3); 47 (1-3); 48 (2, 3); 49 (1-3); 50 (2, 3); 51 (1-3); 52 (1-3); 53 (1-3); 54 (1-3); 55 (1, 2-3); 56 (1, 2-3); 57 (1-3); 58 (1-3); 59 (1-3); 60 (2, 3); 61 (1-3); 62 (1-3); 63 (1-3); 64 (1-2, 3); 65 (1-2, 3); 66 (1-3); 67 (2, 3); 68 (1-3); 69 (2, 3); 70 (1-2, 3); 71 (1-3); 72 (1-3); 73 (1-3); 74 (1-3); 75 (1-3); 76 (1-3); 77 (1, 2-3); 78 (1-3); 79 (1-3); 80 (1-3); 81 (1-3); 82 (1-2, 3); 83 (1-3); 84 (1-2, 3); 85 (1-3); 86 (1-12); 87 (1, 2-3, 4-12)
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