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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, 3, 4); 2 (1, 2-3, 4); 3 (1, 2, 3-4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1-2, 3, 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 4); 25 (1-2, 3, 4); 26 (1, 2/3, 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1/2, 3, 4); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1/3); 39; 40 (2, 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1/2); 45; 46; 47 (2, 3); 48 (1, 2/3); 49 (1 to 3); 50 (1 to 3); 51 (1/2, 3); 52 (1 to 3); 53 (1 to 3); 54 (1, 2/3); 55 (1-3); 56 (2/3, 3); 57 (1 to 3); 58 (1 to 3); 59 (1/3); 60 (2, 3); 61 (1/2, 3); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 70 (1 to 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 (1/2, 3); 81 (1 to 3); 82 (1 to 3); 83 (1 to 3); 84 (1 to 3); 85 (1 to 3); 86 (1 to 3); 87 (1 to 3); 88 (1 to 3); 89 (1 to 3); 90 (1 to 3); 91 (1 to 3); 92 (1 to 3); 93 (1 to 3); 94 (1 to 3); 95 (1 to 3); 96 (1 to 3); 97 (1 to 3); 98 (1 to 3); 99 (1 to 3); 100 (1 to 3); 101 (1 to 3); 102 (1 to 3); 103 (1 to 3); 104 (1 to 3); 105 (1 to 3); 106 (1 to 3); 107 (1 to 3); 108 (1-2, 3); 109 (1 to 3); 110 (1 to 3); 111 (1 to 3); 112 (1 to 3); 113 (1 to 3); 114 (Suppl, 1 to 3); 115 (1 to 3); 116 (1 to 3); 117 (1 to 3); 118 (1 to 3); 119 (1 to 3); 120 (1 to 3); 121 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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15 to 72
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Portico
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Preserved
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2026-04-02
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Preserved : 1968/1969: 1(1-4), 1969/1970: 2(1-4), 1970/1971: 3(1-4), 1971/1972: 4(1-4), 1973/1974: 5(1-4), 1975/1976: 6(1-4), 1976: 7(1-4), 1977: 8(1-4), 1978: 9(1-4), 1979: 10(1-4), 1980: 11(1-4), 1981: 12(1-4), 1982: 13(1-4), 1983: 14(1-4), 1984: 15(1-4), 1985: 16(1-4), 1986: 17(1-4), 1987: 18(1-4), 1988: 19(1-4), 1989: 20(1-4), 1990: 21(1-6), 1991: 22(1-6), 1992: 23(1-6), 1993: 24(1-4), 1993: 25(1-4), 1994: 26(1-4), 1994: 27(1-4), 1995: 28(1-4), 1995: 29(1-4), 1996: 30(1-4), 1996: 31(1-4)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 121
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Portico
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Preserved
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2026-04-02
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Preserved : 2000: 43(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 2002: 49(3)
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Portico
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Preserved
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2026-04-02
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Preserved : 2006: 61(1-2), 2006: 63(2), 2007: 66(2-3), 2008: 67(1-3), 2008: 68(1-3), 2008: 69(1-3), 2009: 70(1-3), 2009: 71(1-3), 2009: 72(1-3), 2010: 73(1-3), 2010: 74(1-3), 2010: 75(1-3), 2011: 76(1-3), 2011: 77(1-3), 2011: 78(1-3), 2012: 79(1-2), 2012: 80(1-3), 2013: 82(1-3), 2013: 83(1-3), 2013: 84(1-3), 2014: 85(1-3), 2014: 86(1-3), 2014: 87(1-3), 2015: 88(3), 2015: 89(1-3), 2015: 90(1-3), 2016: 91(1-3), 2016: 92(1-3), 2016: 93(1-3), 2017: 94(1-3), 2017: 95(1-3), 2017: 96(1-3), 2018: 97(1-3), 2018: 98(1-3), 2018: 99(1-3), 2019: 100(1-3), 2019: 101(1-3), 2019: 102(1-3), 2019/2020: 103(1-3), 2020: 104(1-3), 2020: 105(1-3), 2021: 106(1-3), 2021: 107(1-3), 2021: 108(1-3), 2022: 109(1-3), 2022: 110(1-3), 2022: 111(1-3), 2023: 112(1-3), 2023: 113(1-3), 2023: 114(1, S 1, 2-3), 2024: 115(1-3), 2024: 116(1-3), 2024: 117(1-2), 2025: 118(2), 2025: 119(1-3), 2025: 120(1-3), 2026: 121(1-3)
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LOCKSS Archive
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In Progress
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2026-04-06
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79 to 81, 100 to 102
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LOCKSS Archive
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Preserved
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2026-04-06
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82 to 99
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Library of Congress
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Preserved
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2025-04-07
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97 (3); 98 (1 to 3); 99 (1 to 3); 100 (1 to 3); 101 (1 to 3); 102 (1 to 3); 103 (1 to 3); 104 (1 to 3); 105 (1 to 3); 106 (1 to 3); 107 (1 to 3); 108 (1-2, 3); 109 (1 to 3); 110 (1 to 3); 111 (1 to 3); 112 (1 to 3); 113 (1 to 3); 114 (1, S1, 2, 3); 115 (1 to 3); 116 (1 to 3); 117 (1, 2)
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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); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1, 3); 9 (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 to 3); 18 (1-2, 3); 19 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1); 39; 41 (2, 3); 42 (1 to 3); 43 (1 to 3); 44 (1); 45; 46; 47 (2, 3); 48 (1, 2); 49 (1 to 3); 51 (1, 3); 52 (1 to 3); 53 (1 to 3); 54 (1, 2); 55 (1); 56 (2); 57 (1 to 3); 58 (1 to 3); 59 (1); 61 (3); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 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 to 3); 81 (1 to 3); 82 (1 to 3); 83 (1 to 3); 84 (1 to 3); 85 (1 to 3); 86 (1 to 3); 87 (1 to 3); 88 (1 to 3); 89 (1 to 3); 91 (1 to 3); 92 (1, 3); 93 (1 to 3); 94 (1 to 3); 95 (1 to 3); 96 (1 to 3); 97 (1 to 3); 98 (1 to 3); 99 (1 to 3); 111 (1 to 3); 112 (1 to 3); 113 (1 to 3); 114 (Suppl 1, 1 to 3); 115 (1 to 3); 116 (1 to 3)
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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); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1, 3); 9 (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 to 3); 18 (1-2, 3); 19 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1); 39; 41 (2, 3); 42 (1 to 3); 43 (1 to 3); 44 (1); 45; 46; 47 (2, 3); 48 (1, 2); 49 (1 to 3); 51 (1, 3); 52 (1 to 3); 53 (1 to 3); 54 (1, 2); 55 (1); 56 (2); 57 (1 to 3); 58 (1 to 3); 59 (1); 61 (3); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 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 to 3); 81 (1 to 3); 82 (1 to 3); 83 (1 to 3); 84 (1 to 3); 85 (1 to 3); 86 (1 to 3); 87 (1 to 3); 88 (1 to 3); 89 (1 to 3); 91 (1 to 3); 92 (1, 3); 93 (1 to 3); 94 (1 to 3); 95 (1 to 3); 96 (1 to 3); 97 (1 to 3); 98 (1 to 3); 99 (1 to 3); 111 (1 to 3); 112 (1 to 3); 113 (1 to 3); 114 (Suppl 1, 1 to 3); 115 (1 to 3); 116 (1 to 3)
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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 : 32 (2, 3); 33 (1-3); 34 (1-3); 35 (1-3); 36 (1-3); 37 (1-3); 38 (1); 39; 40 (2, 3); 41 (1-3); 42 (1-3); 43 (1-3); 44 (1); 45; 46; 47 (2, 3); 48 (1, 2); 49 (1-3); 50 (1-3); 51 (1, 3); 52 (1-3); 53 (1-3); 54 (1, 2); 55 (1-3); 56 (2-3, 3); 57 (1-3); 58 (1-3); 59 (1-3); 60 (2, 3); 61 (1-2, 3); 62 (1-3); 63 (1-3); 64 (1-3); 65 (1, 2); 66 (1-3); 67 (1-3); 68 (1-3); 69 (1-3); 70 (1-3); 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 (1-2, 3); 81 (1-3); 82 (1-3); 83 (1-3); 84 (1-3); 85 (1-3); 86 (1-3); 87 (1-3); 88 (1-3); 89 (1-3); 90 (1-3); 91 (1-3); 92 (1-3); 93 (1-3); 94 (1-3); 95 (1-3); 96 (1-3); 97 (1-3); 98 (1-3); 99 (1-3); 100 (1-3); 101 (1-3); 102 (1, 2)
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