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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); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1, 2, 3-4); 6 (, 1 to 4); 7 (, 1 to 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 3); 18 (, 1 to 3); 19 (, 1 to 3); 20 (, 1 to 3); 21 (, 1 to 3); 22 (, 1, 2-3); 23 (, 1, 2-3); 24 (, 1-3); 25 (, 1 to 3); 26 (, 1 to 3); 27 (, 1 to 3); 28 (, 1 to 3); 29 (, 1 to 3); 30 (, 1 to 3); 31 (, 1 to 3); 32 (, 1 to 3); 33 (, 1 to 3); 34 (, 1 to 3); 35 (, 1-3); 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 to 3); 44 (, 1 to 3); 45 (, 1 to 3); 46 (, 1 to 3); 47 (, 1 to 3); 48 (, 1 to 3); 49 (, 1 to 3); 50 (, 1 to 3); 51 (, 1 to 3); 52 (, 1 to 3); 53 (, 1 to 3); 54 (, 1 to 3); 55 (, 1 to 3); 56 (, 1 to 3); 57 (, 1 to 3); 58 (, 1 to 3); 59 (, 1-3); 60 (, 1 to 3); 61 (, 1-3); 62 (, 1 to 3); 63 (, 1 to 3); 64 (, 1, 2-3); 65 (, 1-3); 66 (, 1 to 3); 67 (, 1 to 3); 68 (, 1-3); 69 (, 1-3); 70 (, 1-3); 71 (, 1-3); 72 (, 1-3); 73 (, 1-3); 74 (, 1 to 3); 75 (, 1 to 3); 76 (, 1 to 3); 77 (, 1 to 3); 78-79 (, 1-3); 80 (, 1-3); 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, 2-3); 88 (, 1 to 3); 89 (, 1-3); 90 (, 1 to 3); 91 (, 1-3); 92 (, 1 to 3); 93 (, 1 to 3); 94 (, 1, 2); 95 (, 1-2); 96 (, 1, 2); 97 (, 1, 2); 98 (, 1, 2); 99 (, 1, 2); 100 (, 1-2); 101 (, 1, 2); 102 (, 1, 2); 103 (, 1, 2); 104 (, 1-2); 105 (, 1-2); 106 (, 1, 2); 107 (, 1, 2); 108 (, 1, 2); 109 (, 1, 2); 110 (, 1, 2); 111 (, 1, 2); 112 (, 1, 2); 113 (, 1, 2); 114 (, 1, 2); 115 (, 1, 2); 116 (, 1, 2); 117 (, 1, 2); 118 (, 1, 2); 119 (, 1-2); 120 (, 1, 2); 121 (, 1, 2); 122 (, 1, 2); 123 (, 1, 2); 124 (, 1, 2); 125 (, 1, 2); 126 (, 1, 2); 127 (, 1, 2); 128 (, 1, 2); 129 (, 1-2); 130 (, 1, 2); 131 (, 1, 2); 132 (, 1, 2); 133 (, 1, 2); 134 (, 1, 2); 135 (, 1-2); 136 (, 1, 2); 137 (, 1, 2); 138 (, 1, 2); 139 (, 1, 2); 140 (, 1, 2); 141 (, 1, 2); 142 (, 1, 2); 143 (, 1, 2); 144 (, 1, 2); 145 (, 1-2); 146 (, 1, 2); 147 (, 1-2); 148 (, 1, 2); 149 (, 1-2); 150 (, 1, 2); 151 (, 1, 2); 152 (, 1-2); 153 (, 1 to 4); 154 (, 1-4, 5); 155 (, 1-5); 156 (, 1 to 4); 157 (, 1 to 3); 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 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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Internet Archive
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Preserved
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2025-08-08
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21 to 69
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 1(1-2), 1972: 2(1-4), 1973: 3(1-4), 1974: 4(1-4), 1975: 5(1-4), 1976: 6(1-4), 1977: 7(1-4), 1978: 8(1-4), 1979: 9(1-4), 1980: 10(1-4), 1981: 11(1-4), 1982: 12(1-4), 1983: 13(1-4), 1984: 14(1-4), 1985: 15(1-4), 1986: 16(1-4), 1987: 17(1-3), 1987: 18(1-3), 1988: 19(1-3), 1988: 20(1-3), 1989: 21(1-3), 1989: 22(1-3), 1990: 23(1-3), 1990: 24(1-3), 1991: 25(1-3), 1991: 26(1-3), 1992: 27(1-3), 1992: 28(1-3), 1992: 29(1-3), 1993: 30(1-3), 1993: 31(1-3), 1993: 32(1-3), 1993: 33(1-3), 1994: 34(1-3), 1994: 35(1-3), 1994: 36(1-3), 1994/1995: 37(1-3), 1995: 38(1-3), 1995: 39(1-3), 1995: 40(1-3), 1995: 41(1-3), 1996: 42(1-3), 1996: 43(1-3), 1996: 44(1-3), 1996: 45(1-3)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 78, 80 to 158
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 51(3), 1998: 53(3), 1999: 54(2-3), 1999: 55(1-3), 1999: 56(3), 2000: 58(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 72(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 78(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 87(1), 2007: 88(2), 2007: 89(1-3), 2008: 90(1), 2008: 91(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 98(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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106 to 109, 134 to 137
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Portico
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Preserved
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2026-02-12
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Preserved : 2012: 108(2), 2013: 110(1-2), 2013: 111(1-2), 2013: 112(1-2), 2013: 113(2), 2014: 114(1-2), 2014: 115(1-2), 2014: 116(1-2), 2014: 117(1), 2015: 119(1-2), 2015: 120(1-2), 2015: 121(1-2), 2016: 122(1-2), 2016: 123(1-2), 2016: 124(1-2), 2016: 125(1-2), 2017: 126(1-2), 2017: 127(1-2), 2017: 128(1-2), 2017: 129(1-2), 2018: 130(1-2), 2018: 131(1-2), 2018: 132(1-2), 2018: 133(1-2), 2019: 134(1-2), 2019: 135(1-2), 2019: 136(1-2), 2019: 137(1-2), 2019: 138(1-2), 2019: 139(1-2), 2020: 140(1-2), 2020: 141(1-2), 2020: 142(1-2), 2021: 143(1-2), 2021: 144(1-2), 2021: 145(1-2), 2021: 146(1-2), 2021: 147(1-2), 2022: 148(1-2), 2022: 149(1-2), 2022: 150(1-2), 2022: 151(1-2), 2022: 152(1-2), 2023: 153(1-5), 2023: 154(1-5), 2024: 155(1-5), 2024: 156(1-5), 2025: 157(1-4), 2026: 158(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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110 to 133
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Library of Congress
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Preserved
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2025-04-07
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131 (1, 2); 132 (1, 2); 133 (1, 2); 134 (1, 2); 135 (1-2); 136 (1, 2); 137 (1, 2); 138 (1, 2); 139 (1, 2); 140 (1, 2); 141 (1, 2); 142 (1, 2); 143 (1, 2); 144 (1, 2); 145 (1-2); 146 (1, 2); 147 (1-2); 148 (1, 2); 149 (1-2); 150 (1, 2); 151 (1, 2); 152 (1-2); 153 (1 to 4, 4-5); 154 (1-4, 5); 155 (1-5); 156 (1 to 4, 4-5); 157 (1)
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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); 5 (2, 3); 6 (1 to 3); 7 (1); 8; 9 (2, 3); 11 (1, 2); 12 (1, 2); 13 (1, 2); 14 (1, 2); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1 to 3); 59 (1); 61; 62 (2, 3); 63 (1 to 3); 64 (1, 2); 65 (1); 66 (2, 3); 67 (1 to 3); 68 (1); 69; 71; 72; 73; 74 (2, 3); 75 (1 to 3); 76 (1 to 3); 77 (1 to 3); 78 (1); 81 (2, 3); 82 (1 to 3); 83 (1 to 3); 84 (1 to 3); 85 (1 to 3); 86 (1 to 3); 87 (1, 2); 88 (1 to 3); 89 (1); 91; 92 (2, 3); 93 (1 to 3); 94 (1, 2); 95 (1); 96 (2); 97 (1, 2); 98 (1, 2); 99 (1, 2); 111 (1, 2); 112 (1, 2); 113 (1, 2); 114 (1, 2); 115 (1, 2); 116 (1, 2); 117 (1, 2); 118 (1, 2); 119 (1); 121 (2); 122 (1, 2); 123 (1, 2); 124 (1, 2); 125 (1, 2); 126 (1, 2); 127 (1, 2); 128 (1, 2); 129 (1); 131 (2); 132 (1, 2); 133 (1, 2); 134 (1, 2); 135 (1-2); 136 (2); 137 (1, 2); 138 (1, 2); 139 (1, 2); 141 (1, 2); 142 (1, 2); 143 (1, 2); 144 (1, 2); 145 (1-2); 146 (2); 147 (1-2); 148 (2); 149 (1-2); 151 (2); 152 (1-2); 153 (2, 3, 4-5); 154 (1-4, 5); 155 (1); 156 (2 to 4)
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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); 5 (2, 3); 6 (1 to 3); 7 (1); 8; 9 (2, 3); 11 (1, 2); 12 (1, 2); 13 (1, 2); 14 (1, 2); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1 to 3); 59 (1); 61; 62 (2, 3); 63 (1 to 3); 64 (1, 2); 65 (1); 66 (2, 3); 67 (1 to 3); 68 (1); 69; 71; 72; 73; 74 (2, 3); 75 (1 to 3); 76 (1 to 3); 77 (1 to 3); 78 (1); 81 (2, 3); 82 (1 to 3); 83 (1 to 3); 84 (1 to 3); 85 (1 to 3); 86 (1 to 3); 87 (1, 2); 88 (1 to 3); 89 (1); 91; 92 (2, 3); 93 (1 to 3); 94 (1, 2); 95 (1); 96 (2); 97 (1, 2); 98 (1, 2); 99 (1, 2); 111 (1, 2); 112 (1, 2); 113 (1, 2); 114 (1, 2); 115 (1, 2); 116 (1, 2); 117 (1, 2); 118 (1, 2); 119 (1); 121 (2); 122 (1, 2); 123 (1, 2); 124 (1, 2); 125 (1, 2); 126 (1, 2); 127 (1, 2); 128 (1, 2); 129 (1); 131 (2); 132 (1, 2); 133 (1, 2); 134 (1, 2); 135 (1-2); 136 (2); 137 (1, 2); 138 (1, 2); 139 (1, 2); 141 (1, 2); 142 (1, 2); 143 (1, 2); 144 (1, 2); 145 (1-2); 146 (2); 147 (1-2); 148 (2); 149 (1-2); 151 (2); 152 (1-2); 153 (2, 3, 4-5); 154 (1-4, 5); 155 (1); 156 (2 to 4)
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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 : 46 (1-3); 47 (1-3); 48 (2); 49 (1-3); 50 (1-3); 51 (1-3); 52 (1-3); 53 (1-3); 54 (1-3); 55 (1-3); 56 (1-3); 57 (1-3); 58 (1, 3); 59 (1); 60 (2, 3); 61 (1); 62 (2, 3); 63 (1-3); 64 (1, 2); 65 (1); 66 (2, 3); 67 (1-3); 68 (1); 69; 70; 71; 72; 74 (2, 3); 75 (1-3); 76 (1-3); 77 (1-3); 78-79 (1-3); 80; 81 (2, 3); 82 (1, 2); 83 (1-3); 84 (1-3); 85 (1-3); 86 (1-3); 87 (2-3); 88 (1-3); 89 (1-3); 90 (2, 3); 91 (1-3); 92 (2, 3); 93 (1-3); 94 (1, 2); 95 (1-2); 96 (2); 97 (1, 2); 98 (1, 2); 99 (1, 2); 100 (1-2); 101 (2); 102 (1, 2); 103 (1); 104; 105; 106 (2); 107 (1, 2); 108 (1, 2); 109 (1, 2); 110 (1, 2); 111 (1, 2); 112 (1, 2); 113 (1, 2); 114 (1, 2); 115 (1, 2); 116 (1, 2); 117 (1, 2); 118 (1, 2); 119 (1-2); 120 (2); 121 (1, 2); 122 (1, 2); 123 (1, 2); 124 (1, 2); 125 (1, 2); 126 (1, 2); 127 (1, 2); 128 (1, 2); 129 (1-2); 130 (2); 131 (1, 2); 132 (1, 2); 133 (1, 2); 134 (1, 2); 135 (1-2); 136 (2); 137 (1, 2)
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