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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 (, 1); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1 to 5); 8 (, 1 to 5); 9 (, 1 to 5); 10 (, 1 to 5); 11 (, 1 to 5); 12 (, 1 to 5); 13 (, 1 to 5); 14 (, 1 to 5); 15 (, 1 to 5); 16 (, 1 to 5); 17 (, 1 to 5); 18 (, 1 to 5); 19 (, 1 to 5); 20 (, 1 to 5); 21 (, 1 to 5); 22 (, 1 to 5); 23 (, 1 to 5); 24 (, 1 to 5); 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 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 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 4); 47 (, 1 to 4); 48 (, 1 to 6); 49 (, 1, 2-3, 4 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1-2, 3 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1, 2-3, 4 to 8); 57 (, 1); 58 (, 1); 59 (, 1); 60 (, 1); 61 (, 1); 62 (, 1); 63 (, 1); 64 (, 1); 65 (, 1); 66 (, 1); 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 to 4); 99 (, 1 to 4); 100 (, 1 to 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 to 4); 116 (, 1 to 4); 117 (, 1 to 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); 142 (, 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, 2-3, 4); 154 (, 1-2, 3-4); 155 (, 1-2, 3-4); 156 (, 1 to 6); 157 (, 1 to 3); 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 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 98
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CLOCKSS Archive
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Preserved
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2026-02-09
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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 : 1960: 2(1), 1961: 3(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1963: 5(1), 1964: 6(1), 1965: 7(2, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 12(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 15(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 17(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1972: 19(5), 1972: 20(2, 5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 23(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 26(2), 1977: 28(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 31(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 35(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1982: 39(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 47(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1986: 49(4), 1986: 50(1), 1987: 51(1, 5), 1987/1988: 52(4-5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 53(6), 1989: 55(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 58(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 61(1), 1992: 62(1), 1992: 63(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 75(3-4), 1997: 76(1-4), 1997: 77(1-4), 1997/1998: 78(1-4), 1998: 79(1-4), 1998: 80(1-4), 1998/1999: 81(1-4), 1999: 82(1-4), 1999: 83(1-4), 1999/2000: 84(1-4), 2000: 85(1-4), 2000: 86(1-4), 2000/2001: 87(1-4), 2001: 88(1-4), 2001: 89(1-4), 2001/2002: 90(1-4), 2002: 91(1-4), 2002: 92(1-4), 2002/2003: 93(1-4), 2003: 94(1-4), 2003: 95(1-4), 2003/2004: 96(1-4), 2004: 97(1-4), 2004: 98(1-4), 2004/2005: 99(1-4), 2005: 100(1-4), 2005: 101(1-4), 2005/2006: 102(1-4), 2006: 103(1-4), 2006: 104(1-4), 2006/2007: 105(1-4), 2007: 106(1-4), 2007: 107(1-4), 2007/2008: 108(1-4), 2008: 109(1-4), 2008: 110(1-4), 2008/2009: 111(1-4), 2009: 112(1-4), 2009: 113(1-4), 2009/2010: 114(1-4), 2010: 115(1-4), 2010: 116(1-4), 2011: 117(1-4), 2011: 118(1-4), 2011: 119(1-4), 2012: 120(1-4), 2012: 121(1-4), 2012: 122(1, 3-4), 2013: 123(1-4), 2013: 124(1-4), 2013: 125(1-2, 4), 2014: 126(1-4), 2014: 127(1-4), 2014: 128(1-2, 4), 2015: 129(4), 2015: 130(1-4), 2015: 131(1-4), 2016: 132(1-4), 2016: 133(1-4), 2016: 134(1-4), 2017: 135(1-4), 2017: 136(1-4), 2017: 137(1-4), 2018: 138(1-4), 2018: 139(1-4), 2018: 140(1-4), 2019: 141(1-4), 2019: 142(1-4), 2019: 143(1-4), 2019/2020: 144(1-4), 2020: 145(1-4), 2020: 146(1-4), 2021: 147(1-4), 2021: 148(1-4), 2021: 149(1-4), 2022: 150(1-2, 4), 2022: 151(1-4), 2022: 152(1-4), 2023: 153(2-4), 2023: 154(1-4), 2023: 155(1-4), 2024: 156(1-5), 2025: 157(2-6)
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LOCKSS Archive
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In Progress
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2026-02-09
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120 to 122, 141 to 143
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LOCKSS Archive
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Preserved
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2026-02-09
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123 to 140
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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 : 30 (1); 67 (2-4); 68 (1-4); 69 (1-4); 70 (1-4); 71 (1-4); 72 (1-4); 73 (1-4); 74 (1-4); 75 (1-4); 76 (1-4); 77 (1-4); 78 (1-4); 79 (1-4); 80 (1-4); 81 (1-4); 82 (1-4); 83 (1-4); 84 (1-4); 85 (1-4); 86 (1-4); 87 (1-4); 88 (1-4); 89 (1-4); 90 (1-4); 91 (1-4); 92 (1-4); 93 (2-4); 94 (1-4); 95 (1-4); 96 (1-4); 97 (1-4); 98 (1-4); 99 (1-4); 100 (1-4); 101 (1-4); 102 (1-4); 103 (1-4); 104 (1-4); 105 (1-4); 106 (1, 2, 4); 107 (1-4); 108 (1-4); 109 (1-4); 110 (1-4); 111 (1-4); 112 (1-4); 113 (1-4); 114 (1-4); 115 (1-4); 116 (1-4); 117 (1-4); 118 (1-4); 119 (1-4); 120 (1-4); 121 (1-4); 122 (1-4); 123 (1-3); 124 (1-4); 125 (1-4); 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); 136 (1-4); 137 (1-4); 138 (1-4); 139 (1-4); 140 (1-4); 141 (1-4); 142 (1-4); 143 (1-4); 175 (3)
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Library of Congress
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Preserved
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2025-04-07
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138 (3, 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, 2-3, 4); 154 (1-2, 3-4); 155 (1-2, 3-4); 156 (1 to 5)
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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 4); 8 (1 to 4); 9 (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); 75 (3, 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (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); 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 to 4); 99 (1 to 4); 111 (1 to 4); 112 (1 to 4); 113 (1 to 4); 114 (1 to 4); 115 (1 to 4); 116 (1 to 4); 117 (1 to 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, 2-3, 4); 154 (1-2, 3-4); 155 (1-2, 3-4); 156 (1 to 6)
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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 4); 8 (1 to 4); 9 (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); 75 (3, 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (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); 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 to 4); 99 (1 to 4); 111 (1 to 4); 112 (1 to 4); 113 (1 to 4); 114 (1 to 4); 115 (1 to 4); 116 (1 to 4); 117 (1 to 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, 2-3, 4); 154 (1-2, 3-4); 155 (1-2, 3-4); 156 (1 to 6)
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