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Scholars Portal
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Preserved
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2026-03-19
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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 (3); 19 (1-2, 3); 20 (1, 2-3); 21 (1-3); 22; 23; 24; 25; 26; 27 (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 (2 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 (s1, 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, 2)
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Portico
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Preserved
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2026-04-02
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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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2026-04-02
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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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2026-03-30
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61, 72 to 107
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National Digital Preservation Program, China
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Preserved
|
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
|
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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