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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 to 4); 3 (, 1, 2, 3/4); 4 (, 1 to 4); 5 (, 1 to 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 (, 1/2, 3, 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 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 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 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, 2/3); 57 (, 1/2, 3); 58 (, 1 to 3); 59 (, 1, 2/3); 60 (, 1 to 3); 61 (, 1 to 3); 62 (, 1 to 3); 63 (, 1 to 3); 64 (, 1 to 3); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1 to 4); 69 (, 1 to 4); 70 (, 1 to 4); 71 (, 1 to 4); 72 (, 1 to 4); 73 (, 1 to 4); 74 (, 1 to 4); 75 (, 1 to 4); 76 (, 1 to 4); 77 (, 1 to 4); 78 (, 1 to 4); 79 (, 1 to 4); 80 (, 1 to 4); 81 (, 1 to 4); 82 (, 1 to 4); 83 (, 1 to 4); 84 (, 1 to 4); 85 (, 1 to 4); 86 (, 1 to 4); 87 (, 1 to 4); 88 (, 1 to 4); 89 (, 1 to 4); 90 (, 1 to 4); 91 (, 1 to 4); 92 (, 1 to 4); 93 (, 1 to 4); 94 (, 1 to 4); 95 (, 1 to 4); 96 (, 1 to 4); 97 (, 1 to 4); 98 (, 1, 2, 3/4); 99 (, 1/2, 3/4); 100 (, 1/2, 3, 4); 101 (, 1 to 4); 102 (, 1 to 4); 103 (, 1 to 4); 104 (, 1 to 4); 105 (, 1 to 4); 106 (, 1 to 4); 107 (, 1 to 4); 108 (, 1 to 4); 109 (, 1 to 4); 110 (, 1 to 4); 111 (, 1 to 4); 112 (, 1 to 4); 113 (, 1 to 4); 114 (, 1 to 4); 115 (, 1/2, 3, 4); 116 (, 1/2, 3, 4); 117 (, 1/2, 3, 4); 118 (, 1 to 4); 119 (, 1 to 4); 120 (, 1 to 4); 121 (, 1 to 4); 122 (, 1 to 4); 123 (, 1 to 4); 124 (, 1 to 4); 125 (, 1 to 4); 126 (, 1 to 4); 127 (, 1 to 4); 128 (, 1 to 4); 129 (, 1 to 4); 130 (, 1 to 4); 131 (, 1 to 4); 132 (, 1 to 4); 133 (, 1 to 4); 134 (, 1 to 4); 135 (, 1 to 4); 136 (, 1 to 4); 137 (, 1 to 4); 138 (, 1 to 4); 139 (, 1 to 4); 140 (, 1 to 4); 141 (, 1 to 4); 142 (, 1 to 4); 143 (, 1 to 4); 144 (, 1 to 4); 145 (, 1 to 4); 146 (, 1 to 4); 147 (, 1 to 4); 148 (, 1 to 4); 149 (, 1 to 4); 150 (, 1 to 4); 151 (, 1 to 4); 152 (, 1 to 4); 153 (, 1 to 4); 154 (, 1 to 4); 155 (, 1 to 4); 156 (, 1 to 4); 157 (, 1 to 4); 158 (, 1 to 4); 159 (, 1 to 4); 160 (, 1 to 4); 161 (, 1 to 4); 162 (, 1 to 4); 163 (, 1 to 4); 164 (, 1 to 4); 165 (, 1 to 4); 166 (, 1 to 4); 167 (, 1 to 4); 168 (, 1 to 4); 169 (, 1 to 4); 170 (, 1 to 4); 171 (, 1 to 4); 172 (, 1 to 4); 173 (, 1 to 4); 174 (, 1 to 4); 175 (, 1 to 4); 176 (, 1 to 4); 177 (, 1 to 4); 178 (, 1 to 4); 179 (, 1 to 4); 180 (, 1 to 4); 181 (, 1 to 4); 182 (, 1 to 4); 183 (, 1 to 4); 184 (, 1 to 4); 185 (, 1 to 4); 186 (, 1 to 4); 187 (, 1 to 4); 188 (, 1 to 4); 189 (, 1, 2, 4); 190 (, 1 to 4); 191 (, 1 to 4); 192 (, 1 to 4); 193 (, 1 to 4); 194 (, 1-2, 3, 4); 195 (, 1 to 4); 196 (, 1 to 4); 197 (, 1 to 4); 198 (, 1 to 4); 199 (, 1 to 4); 200 (, 1-2, 3-4); 201 (, 1 to 4); 202 (, 1 to 4); 203 (, 1-2, 3-4); 204 (, 1 to 4); 205 (, 1, 2, 3-4); 206 (, 1-2, 3-4); 207 (, 1 to 7); 1968; 1969; 1970; 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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1 to 157
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 1(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 188, 191
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 116, 118 to 208
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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 4(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 12(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 18(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 31(1), 1978: 36(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 44(2), 1980: 47(1, 3), 1981: 51(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1983: 57(1-3), 1983: 58(2), 1983: 59(1), 1984: 62(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 67(4), 1985: 68(1), 1986: 69(2), 1987: 72(1), 1988: 75(2, 4), 1988: 77(1), 1989: 78(4), 1989: 80(1), 1990: 82(3), 1990: 83(2, 4), 1991: 85(3), 1991: 87(4), 1992: 90(3), 1993: 95(1), 1993: 96(3), 1994: 100(4), 1995: 101(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 106(3), 1997: 109(2-4), 1997: 110(1-4), 1997: 111(1-4), 1997: 112(1-4), 1997/1998: 113(1-4), 1998: 114(1-4), 1998: 115(1-4), 1998: 116(1-4), 1998: 117(1-4), 1999: 118(1-4), 1999: 119(1-4), 1999: 120(1-4), 1999: 121(1-4), 2000: 122(1-4), 2000: 123(1-4), 2000: 124(1-4), 2000: 125(1-4), 2001: 126(1-4), 2001: 127(1-4), 2001: 128(1-4), 2001: 129(1-4), 2002: 130(1-4), 2002: 131(1-4), 2002: 132(1-4), 2002: 133(1-4), 2003: 134(1-4), 2003: 135(1-4), 2003: 136(1-4), 2003: 137(1-4), 2004: 138(1-4), 2004: 139(1-4), 2004: 140(1-4), 2004: 141(1-4), 2005: 142(1-4), 2005: 143(1-4), 2005: 144(1-4), 2005: 145(1-4), 2005/2006: 146(1-4), 2006: 147(1-4), 2006: 148(1-4), 2006: 149(1-4), 2006/2007: 150(1-4), 2007: 151(1-4), 2007: 152(1-4), 2007: 153(1-4), 2007/2008: 154(1-4), 2008: 155(1-4), 2008: 156(1-4), 2008: 157(1-4), 2008/2009: 158(1-4), 2009: 159(1-4), 2009: 160(1-4), 2009: 161(1-4), 2010: 162(1-4), 2010: 163(1-4), 2010: 164(1-4), 2011: 165(1-4), 2011: 166(1-4), 2011: 167(1-4), 2012: 168(1-4), 2012: 169(1-4), 2012: 170(1, 3), 2013: 171(1-4), 2013: 172(1-4), 2013: 173(1, 4), 2014: 174(1-4), 2014: 175(1-4), 2014: 176(1-4), 2015: 177(3-4), 2015: 178(1-4), 2015: 179(1-4), 2016: 180(1-4), 2016: 181(1-4), 2016: 182(1-4), 2016/2017: 183(1-4), 2017: 184(1-4), 2017: 185(1-4), 2018: 186(1-4), 2018: 187(1-4), 2018: 188(1-4), 2019: 189(1-4), 2019: 190(1-4), 2019: 191(1-4), 2019/2020: 192(1-4), 2020: 193(1-4), 2020: 194(1-4), 2021: 195(1-4), 2021: 196(1-4), 2021: 197(1-4), 2022: 198(1-4), 2022: 199(1-4), 2022: 200(1-4), 2023: 201(2-4), 2023: 202(1-4), 2023: 203(1-4), 2024: 204(1-4), 2024: 205(1-4), 2024: 206(1-2), 2024/2025: 207(1, 3-12), 2025/2026: 208(1-2)
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LOCKSS Archive
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In Progress
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2026-02-09
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189
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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 : 111 (2); 118 (1); 119; 125 (2-4); 126 (1-4); 127 (1-4); 128 (1-4); 129 (1-4); 130 (1-4); 131 (1-4); 132 (1-4); 133 (1-4); 134 (1-4); 135 (1-4); 137 (1); 138; 139 (3); 140 (2, 4); 142 (3); 143 (1, 2); 144 (1, 2); 145 (1, 4); 147 (1, 4); 148 (1-4); 149 (1-4); 150 (1-4); 151 (1-4); 152 (2-4); 153 (1-4); 154 (1-4); 155 (1-4); 156 (1-4); 157 (1-4); 158 (1-4); 159 (1-4); 160 (1-4); 161 (1-4); 162 (1-4); 163 (1-4); 164 (1-4); 165 (1-4); 166 (1-4); 167 (1-4); 168 (1-4); 169 (1-4); 170 (1-4); 171 (1-4); 172 (1-4); 173 (1, 3, 4); 174 (1-4); 175 (1-4); 176 (1-4); 177 (1-4); 178 (1-4); 179 (1-4); 180 (1-4); 181 (1-4); 182 (1-4); 183 (1-4); 184 (1-4); 185 (1-4); 186 (1-4); 187 (1-4); 188 (1-4); 189 (1-4); 190 (1-4); 191 (1-4)
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Library of Congress
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Preserved
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2025-04-07
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186 (2 to 4); 187 (1 to 4); 188 (1 to 4); 189 (1 to 4); 190 (1 to 4); 191 (1 to 4); 192 (1 to 4); 193 (1 to 4); 194 (1-2, 3, 4); 195 (1 to 4); 196 (1 to 4); 197 (1 to 4); 198 (1 to 4); 199 (1 to 4); 200 (1-2, 3-4); 201 (1 to 4); 202 (1 to 4); 203 (1-2, 3-4); 204 (1 to 4); 205 (1 to 3-4); 206 (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 : 2 (1-2, 3-4); 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); 21 (1 to 4); 22 (1 to 4); 23 (1-2, 3-4); 24 (1 to 4); 25 (1 to 3); 111 (1 to 4); 112 (1 to 4); 113 (1 to 4); 114 (1 to 4); 115 (1, 3, 4); 116 (1, 3, 4); 117 (1, 3, 4); 118 (1 to 4); 119 (1 to 4); 121 (1 to 4); 122 (1 to 4); 123 (1 to 4); 124 (1 to 4); 125 (1 to 4); 126 (1 to 4); 127 (1 to 4); 128 (1 to 4); 129 (1 to 4); 131 (1 to 4); 132 (1 to 4); 133 (1 to 4); 134 (1 to 4); 135 (1 to 4); 136 (1 to 4); 137 (1 to 4); 138 (1 to 4); 139 (1 to 4); 141 (1 to 4); 142 (1 to 4); 143 (1 to 4); 144 (1 to 4); 145 (1 to 4); 146 (1 to 4); 147 (1 to 4); 148 (1 to 4); 149 (1 to 4); 151 (1 to 4); 152 (1 to 4); 153 (1 to 4); 154 (1 to 4); 155 (1 to 4); 156 (1 to 4); 157 (1 to 4); 158 (1 to 4); 159 (1 to 4); 161 (1 to 4); 162 (1 to 4); 163 (1 to 4); 164 (1 to 4); 165 (1 to 4); 166 (1 to 4); 167 (1 to 4); 168 (1 to 4); 169 (1 to 4); 171 (1 to 4); 172 (1 to 4); 173 (1 to 4); 174 (1 to 4); 175 (1 to 4); 176 (1 to 4); 177 (1 to 4); 178 (1 to 4); 179 (1 to 4); 181 (1 to 4); 182 (1 to 4); 183 (1 to 4); 184 (1 to 4); 185 (1 to 4); 186 (1 to 4); 187 (1 to 4); 188 (1 to 4); 189 (1 to 4); 191 (1 to 4); 192 (1 to 4); 193 (1 to 4); 194 (1-2, 3, 4); 195 (1 to 4); 196 (1 to 4); 197 (1 to 4); 198 (1 to 4); 199 (1 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 : 2 (1-2, 3-4); 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); 21 (1 to 4); 22 (1 to 4); 23 (1-2, 3-4); 24 (1 to 4); 25 (1 to 3); 111 (1 to 4); 112 (1 to 4); 113 (1 to 4); 114 (1 to 4); 115 (1, 3, 4); 116 (1, 3, 4); 117 (1, 3, 4); 118 (1 to 4); 119 (1 to 4); 121 (1 to 4); 122 (1 to 4); 123 (1 to 4); 124 (1 to 4); 125 (1 to 4); 126 (1 to 4); 127 (1 to 4); 128 (1 to 4); 129 (1 to 4); 131 (1 to 4); 132 (1 to 4); 133 (1 to 4); 134 (1 to 4); 135 (1 to 4); 136 (1 to 4); 137 (1 to 4); 138 (1 to 4); 139 (1 to 4); 141 (1 to 4); 142 (1 to 4); 143 (1 to 4); 144 (1 to 4); 145 (1 to 4); 146 (1 to 4); 147 (1 to 4); 148 (1 to 4); 149 (1 to 4); 151 (1 to 4); 152 (1 to 4); 153 (1 to 4); 154 (1 to 4); 155 (1 to 4); 156 (1 to 4); 157 (1 to 4); 158 (1 to 4); 159 (1 to 4); 161 (1 to 4); 162 (1 to 4); 163 (1 to 4); 164 (1 to 4); 165 (1 to 4); 166 (1 to 4); 167 (1 to 4); 168 (1 to 4); 169 (1 to 4); 171 (1 to 4); 172 (1 to 4); 173 (1 to 4); 174 (1 to 4); 175 (1 to 4); 176 (1 to 4); 177 (1 to 4); 178 (1 to 4); 179 (1 to 4); 181 (1 to 4); 182 (1 to 4); 183 (1 to 4); 184 (1 to 4); 185 (1 to 4); 186 (1 to 4); 187 (1 to 4); 188 (1 to 4); 189 (1 to 4); 191 (1 to 4); 192 (1 to 4); 193 (1 to 4); 194 (1-2, 3, 4); 195 (1 to 4); 196 (1 to 4); 197 (1 to 4); 198 (1 to 4); 199 (1 to 4)
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