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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 46 (1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1, 2‐3, 4); 57 (, 1‐2, 3‐4); 58 (, 1‐2, 3‐4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 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 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 3); 1955; 1956; 1957; 1958; 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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20 to 103
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.100:1-4,S1;vol.101:1-4;vol.102:1-4;vol.103:1-4;vol.104:1-4;vol.105:1-4;vol.106:1-4;vol.107:1-4;vol.108:1-4;vol.109:1-4;vol.110:1-4;vol.111:1-4;vol.88:1-4;vol.89:1-4;vol.90:1-4;vol.91:1-4;vol.92:1-4;vol.93:1-4;vol.94:1-4;vol.95:1-4;vol.96:1-4;vol.97:1-4;vol.98:1-4;vol.99:1-4
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 117
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Portico
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Preserved
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2026-02-12
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Preserved : 1955: 46(1-4), 1956: 47(1-4), 1957: 48(1-4), 1958: 49(1-4), 1959: 50(1-4), 1960: 51(1-4), 1961: 52(1-4), 1962: 53(1-4), 1963: 54(1-4), 1964: 55(1-4), 1965: 56(1-4), 1966: 57(1-4), 1967: 58(1-4), 1968: 59(1-4), 1969: 60(1-4), 1970: 61(1-4), 1971: 62(1-4), 1972: 63(1-4), 1973: 64(1-4), 1974: 65(1-4), 1975: 66(1-4), 1976: 67(1-4), 1977: 68(1-4), 1978: 69(1-4), 1979: 70(1-4), 1980: 71(1-4), 1981: 72(1-4), 1982: 73(1-4), 1983: 74(1-4), 1984: 75(1-4), 1985: 76(1-4), 1986: 77(1-4), 1987: 78(1-4), 1988: 79(1-4), 1989: 80(1-4), 1990: 81(1-4), 1991: 82(1-4), 1992: 83(1-4), 1993: 84(1-4), 1994: 85(1-4), 1995: 86(1-4), 1996: 87(1-4), 1997: 88(1-4), 1998: 89(1-4), 1999: 90(1-4), 2000: 91(1-4), 2001: 92(1-4), 2002: 93(1-4), 2003: 94(1-4), 2004: 95(1-4), 2005: 96(1-4), 2006: 97(1-4), 2007: 98(1-4), 2008: 99(1-4), 2009: 100(1-4), 2010: 101(1-4), 2011: 102(1-4), 2012: 103(1-4), 2013: 104(1-4), 2014: 105(1-4), 2015: 106(1-4), 2016: 107(1-4), 2017: 108(1-4), 2018: 109(1-4), 2019: 110(1-4), 2020: 111(1-4), 2021: 112(1-4), 2022: 113(1-4), 2023: 114(1, S1, 2-4), 2024: 115(1-4), 2025: 116(1-4), 2026: 117(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 (S1, 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); 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 (S1, 1 to 4); 115 (1 to 4); 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 (S1, 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); 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 (S1, 1 to 4); 115 (1 to 4); 116 (1 to 4)
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