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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 8 (1); 9 (, 1); 10 (, 1); 11 (, 1); 12 (, 1); 13 (, 1); 14 (, 1); 15 (, 1); 18 (, 1-2); 25 (, 1-2); 28 (, 2); 31 (, 1-2, 3-4); 32 (, 1, 2, 3-4); 33 (, 1-4); 34 (, 1-4); 35 (, 1-4); 36 (, 1, 2, 3-4); 37 (, 1-2, 3, 4); 38 (, 1 to 4); 39 (, 1-2, 3, 4); 40 (, 1-2, 3-4); 41 (, 1-2, 3-4); 42 (, 1-2, 3-4); 43 (, 1, 2, 3-4); 44 (, 1-4); 45 (, 1-2, 3-4); 46 (, 1-2, 3, 4); 47 (, 1-4); 48 (, 1-3, 4); 49 (, 1-4); 50 (, 1-3, 4); 51 (, 1-4); 52 (, 1-3, 4); 53 (, 1-2, 3, 4); 54 (, 1-2, 3-4); 55 (, 1, 2, 3-4); 56 (, 1-4); 57 (, 1-4); 58 (, 1-4); 59 (, 1-4); 60 (, 1-4); 61 (, 1-4); 62 (, 1-4); 63 (, 1-4); 64 (, 1-4); 65 (, 1-4); 66 (, 1-4); 67 (, 1-4); 68 (, 1-4); 69 (, 1-4); 70 (, 1-4); 71 (, 1-4); 72 (, 1-4); 73 (, 1-4); 74 (, 1-4); 75 (, 1, 2-4); 76 (, 1-4); 77 (, 1-4); 78 (, 1-4); 79 (, 1-4); 80 (, 1-2, 3-4); 81 (, 1-2, 3-4); 82 (, 1-2, 3-4); 83 (, 1-2, 3-4); 84 (, 1-2, 3-4); 85 (, 1-2, 3-4); 86 (, 1-4); 87 (, 1-2, 3-4); 88 (, 1-4); 89 (, 1-2, 3-4); 90 (, 1-2, 3-4); 91 (, 1-2, 3-4); 92 (, 1-2, 3-4); 93 (, 1-2, 3-4); 94 (, 1-2, 3-4); 95 (, 1-2, 3-4); 96 (, 1 to 6); 97 (, 1 to 5); 98 (, 2); 102 (, 1 to 6); 103 (, 2-3); 104 (, 1, 2-3, 4, 5-6); 105 (, 1, 2-3, 4-5, 6); 106 (, 1, 2, 6); 107 (, 1-2, 3 to 6); 108 (, 1 to 6); 109 (, 1 to 3, 5, 6); 110 (, 2, 4 to 6); 111 (, 1 to 6); 112 (, 1 to 6); 113 (, 1-2, 3, 4, 5-6); 114 (, 1-2, 3, 4-5, 6); 115 (, 1 to 4, 5-6); 116 (, 1 to 4, 5-6); 117 (, 1 to 6); 118 (, 1 to 4, 5-6); 1977; 1978; 1979; 1980; 1981; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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Internet Archive
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Preserved
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2025-08-08
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1 to 24
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LOCKSS Archive
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Preserved
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2026-02-09
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8 to 118
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CLOCKSS Archive
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Preserved
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2026-02-09
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8 to 119
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LOCKSS Archive
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In Progress
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2026-02-09
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119
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 15(1), 1980: 16(1), 1981: 17(1), 1981: 18(1-2), 1982: 19(3-4), 1983: 23(1-4), 1983: 24(1-4), 1983: 25(1-4), 1983: 26(1-2), 1984: 28(1-2), 1984: 30(3-4), 1985: 32(1-2), 1985: 33(1-4), 1985: 34(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1986: 36(1-2), 1987: 38(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 43(1-2), 1989: 46(3-4), 1989: 48(4), 1990: 50(4), 1990: 53(1-2), 1990: 54(1-2), 1990: 55(1-2), 1991: 56(1-4), 1991: 58(1-4), 1991: 59(1-4), 1991: 60(1-4), 1991: 62(1-4), 1992: 63(1-4), 1992: 66(1-4), 1992: 67(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 74(1-4), 1994: 75(1-4), 1994: 77(1-4), 1995: 79(1-4), 1995: 80(3-4), 1996: 82(1-2), 1996: 83(3-4), 1997: 84(1-4), 1997: 85(1-4), 1997: 86(1-4), 1998: 87(1-4), 1998: 88(1-4), 1998: 89(1-4), 1999: 90(1-4), 1999: 91(1-4), 2000: 92(1-4), 2000: 93(1-4), 2001: 94(1-4), 2001: 95(1-4), 2002: 96(1-6), 2003: 97(1-6), 2004: 98(1-6), 2005: 99(1-6), 2006: 100(1-6), 2007: 101(1-6), 2008: 102(1-6), 2009: 103(1-6), 2010: 104(1-6), 2011: 105(1-6), 2012: 106(1-6), 2013: 107(1-6), 2014: 108(1-6), 2015: 109(1-6), 2016: 110(1-6), 2017: 111(1-6), 2018: 112(1-6), 2019: 113(1-6), 2020: 114(1-6), 2021: 115(1-6), 2022: 116(1-6), 2023: 117(1-6), 2024: 118(1-6), 2025: 119(1-4)
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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 : 1 (1-2, 3-4); 2 (1); 3; 4; 5; 6 (2-4); 7 (1); 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18 (3-4); 19 (1-2, 3-4); 20 (1-2, 3-4); 21 (1-2, 3-4); 22 (1-2, 3-4); 23 (1, 2, 4); 24 (1, 2, 4); 25 (3, 4); 26 (1-2, 3-4); 27 (1-2, 3-4); 28 (1, 2, 3-4); 29 (1-4); 30 (3, 4); 31 (1-2, 3-4); 32 (1, 2, 3-4); 33 (1-4); 34; 35; 36 (3-4); 37 (1-2, 3, 4); 38 (1-4); 39 (1-2, 3, 4); 40 (1-2, 3-4); 41 (1-2, 3-4); 42 (1-2, 3-4); 43 (1, 2, 3-4); 44 (1-4); 45 (3-4); 46 (1-2, 3, 4); 47 (1-4); 48 (4); 49 (1-4); 50 (4); 51 (1-4); 52 (4); 53 (1-2, 4); 54 (1-2, 3-4); 55 (1, 2, 3-4); 56 (1-4); 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72; 73; 74; 75 (2-4); 76 (1-4); 77; 78; 79; 80 (3-4); 81 (1-2, 3-4); 82 (1-2, 3-4); 83 (1-2, 3-4); 84 (1-2, 3-4); 85 (1-2, 3-4); 86 (1-4); 87 (3-4); 88 (1-4); 89 (3-4); 90 (1-2, 3-4); 91 (1-2, 3-4); 92 (1-2, 3-4); 93 (1-2, 3-4); 94 (1-2, 3-4); 95 (1-2, 3-4); 96 (1, 2, 4-6); 97 (1-6); 98 (1-6); 99 (1-4); 100 (2, 3, 4-5, 6); 101 (1, 2, 3-4, 5-6); 102 (1-6)
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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 : 115 (1 to 4, 5-6); 116 (1 to 4, 5-6); 117 (1 to 6); 118 (1 to 4, 5-6)
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Library of Congress
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Preserved
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2025-04-07
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104 (1, 2-3, 4, 5-6); 105 (1, 2-3, 4-5, 6); 106 (1 to 4-5, 6); 107 (1-2, 3 to 6); 108 (1 to 6); 109 (1 to 6); 110 (1 to 6); 111 (1 to 6); 112 (1 to 6); 113 (1-2, 3 to 5-6); 114 (1-2, 3, 4-5, 6); 115 (1 to 5-6); 116 (1 to 5-6); 117 (1 to 6); 118 (1 to 4)
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