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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); 2 (, 1-2, 3); 3 (, 1, 2-3); 4 (, 1, 2-3); 5 (, 1-2, 3); 6 (, 1-2, 3); 7 (, 1, 2-3); 8 (, 1, 2-3); 9 (, 1-2, 3); 10 (, 1-2, 3); 11 (, 1, 2-3); 12 (, 1, 2-3); 13 (, 1-2, 3); 14 (, 1, 2-3); 15 (, 1, 2-3); 16 (, 1-2, 3); 17 (, 1-3); 18 (, 1-2, 3); 19 (, 1-2, 3); 20 (, 1, 2-3); 21 (, 1-3); 22 (, 1-3); 23 (, 1-3); 24 (, 1-3); 25 (, 1-3); 26 (, 1-3); 27 (, 1, 2-3); 28 (, 1, 2-3); 29 (, 1, 2-3); 30 (, 1-2, 3); 31 (, 1, 2-3); 32 (, 1-2, 3); 33 (, 1-2, 3); 34 (, 1-2, 3); 35 (, 1-2, 3); 36 (, 1 to 3); 37 (, 1-2, 3); 38 (, 1, 2-3); 39 (, 1, 2-3); 40 (, 1, 2-3); 41 (, 1-2, 3); 42 (, 1-2, 3); 43 (, 1, 2-3); 44 (, 1-2, 3); 45 (, 1-2, 3); 46 (, 1-2, 3); 47 (, 1-2, 3); 48 (, 1-2, 3); 49 (, 1-2, 3); 50 (, 1-2, 3); 51 (, 1-2, 3); 52 (, 1, 2); 53 (, 1, 2); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1, 2, 3-4); 60 (, 1 to 3); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1, 2-3, 4); 65 (, 1); 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 3); 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 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; 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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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 65(1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 78
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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;vol.101:1-4;vol.102:1;vol.78:1-4;vol.79:1-4;vol.80:1-4;vol.81:1-4;vol.82:1-4;vol.83:1-4;vol.84:1-4;vol.85:1-4;vol.86:1-4;vol.87:1-4;vol.88:1-4;vol.89:1-4;vol.90:1-4,sup.s1;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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Portico
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Preserved
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2026-02-12
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Preserved : 1920: 1(1-3), 1921: 2(1-3), 1922: 3(1-3), 1923: 4(1-3), 1924: 5(1-3), 1925: 6(1-3), 1926: 7(1-3), 1927: 8(1-3), 1928: 9(1-3), 1929: 10(1-3), 1930: 11(1-3), 1931: 12(1-3), 1932: 13(1-3), 1933: 14(1-3), 1934: 15(1-3), 1935: 16(1-3), 1936: 17(1-3), 1937: 18(1-3), 1938: 19(1-3), 1939: 20(1-3), 1940: 21(1-3), 1941: 22(1-3), 1942: 23(1-3), 1943: 24(1-3), 1944: 25(1-3), 1945: 26(1-3), 1946: 27(1-3), 1947: 28(1-3), 1948: 29(1-3), 1949: 30(1-3), 1950: 31(1-3), 1951: 32(1-3), 1952: 33(1-3), 1953: 34(1-3), 1954: 35(1-3), 1955: 36(1-3), 1956: 37(1-3), 1957: 38(1-3), 1958: 39(1-3), 1959: 40(1-3), 1960: 41(1-3), 1961: 42(1-3), 1962: 43(1-3), 1963: 44(1-3), 1964: 45(1-3), 1965: 46(1-3), 1966: 47(1-3), 1967: 48(1-3), 1968: 49(1-3), 1969: 50(1-3), 1970: 51(1-3), 1971: 52(1-2), 1972: 53(1-2), 1973: 54(1-4), 1974: 55(1-4), 1975: 56(1-4), 1976: 57(1-4), 1977: 58(1-4), 1978: 59(1-4), 1979: 60(1-3), 1980: 61(1-4), 1981: 62(1-4), 1982: 63(1-4), 1983: 64(1-4), 1984: 65(1-4), 1985: 66(1-4), 1986: 67(1-4), 1987: 68(1-4), 1988: 69(1-4), 1989: 70(1-4), 1990: 71(1-4), 1991: 72(1-4), 1992: 73(1-5), 1993: 74(1-4), 1994: 75(1-4), 1995: 76(1-4), 1996: 77(1-4), 1997: 78(1-4), 1998: 79(1-4), 1999: 80(1-4), 2000: 81(1-4), 2001: 82(1-4), 2002: 83(1-4), 2003: 84(1-4), 2004: 85(1-4), 2005: 86(1-4), 2006: 87(1-4), 2007: 88(1-4), 2008: 89(1-4), 2009: 90(1-4), 2010: 91(1-4), 2011: 92(1-4), 2012: 93(1-4), 2013: 94(1-4), 2014: 95(1-4), 2015: 96(1-4), 2016: 97(1-4), 2017: 98(1-4), 2018: 99(1-4), 2019: 100(1-4), 2020: 101(1-4), 2021: 102(1-4), 2022: 103(1-4), 2023: 104(1-4), 2024: 105(1-4), 2025: 106(1-4), 2026: 107(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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61, 72 to 107
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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); 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)
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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); 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)
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