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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1, 2); 12 (1); 13 (2); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 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 to 4); 57 (1 to 4); 58 (1 to 4); 59 (S1, 1 to 4); 60 (S1, 1 to 4); 61 (S1, 1 to 4); 62 (S1, 1 to 4); 63 (S1, 1 to 4); 65 (S, 1 to 5); 66 (S, 1 to 5); 67 (s1, 1 to 6); 68 (s1, 1 to 6); 69 (s1, 1 to 6); 70 (S1, 1 to 6); 71 (1 to 6); 72 (s1, 1 to 6); 73 (s1, 1 to 6); 74 (s1, 1 to 6); 75 (s1, 1 to 6); 76 (s1, 1 to 6); 77 (s1, 1 to 6); 78 (s1, 1 to 6); 79 (s1, 1 to 6); 80 (s1, 1 to 6); 81 (S1, 1 to 6); 82 (S1, 1 to 6); 83 (S1, 1 to 6); 84 (S1, 1 to 6); 85 (S1, 1 to 6); 86 (S1, 1 to 6); 87 (S1, 1 to 6); 88 (S1, 1 to 6); 89 (S1, 1 to 6); 90 (1 to 6); 91 (1 to 6); 92 (1 to 6); 93 (1 to 6); 94 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1-2 to 75
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.65:1-5,S;vol.66:1-5,S;vol.67:1-6,sup.s1;vol.68:1-6,sup.s1;vol.69:1-6,sup.s1;vol.70:1-6,S1;vol.71:1-6,sup.s1;vol.72:1-6,sup.s1;vol.73:1-6,sup.s1;vol.74:1-6,sup.s1;vol.75:1-6,sup.s1;vol.76:1-6,sup.s1;vol.77:1-6,sup.s1;vol.78:1-6,sup.s1;vol.79:1-6,sup.s1,sup.s2;vol.80:1-6,sup.s1;vol.81:1-6,sup.S1,sup.S2,sup.S3;vol.82:1-6,sup.S1,sup.S2;vol.83:1-6,sup.S1,sup.S2,sup.S3;vol.84:1-6,S1;vol.85:1-6,sup.S1,sup.S2;vol.86:1-6,sup.S1;vol.87:1-6,sup.S1;vol.88:1-6,sup.S1;vol.89:1
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Portico
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Preserved
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2026-04-02
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Preserved : 1930: 1(1-2), 1931: 2(1-2), 1932: 3(1-2), 1933: 4(1-2), 1934: 5(1-2), 1935: 6(1-2), 1936: 7(1-2), 1937: 8(1-2), 1938: 9(1-2), 1939: 10(1-2), 1940: 11(1-2), 1941: 12(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1943/1944: 13(1-2), 1946: 14(1-3), 1947: 15(1-3), 1948: 16(1-3), 1949: 17(1-3), 1950: 18(1-3), 1951: 19(1-3), 1952: 20(1-3), 1953: 21(1-3), 1954: 22(1-3), 1955: 23(1-3), 1956: 24(1-3), 1957: 25(1-3), 1958: 26(1-3), 1959: 27(1-3), 1960: 28(1-3), 1961: 29(1-3), 1962: 30(1-3), 1963: 31(1-3), 1964: 32(1-3), 1965: 33(1-3), 1966: 34(1-3), 1967: 35(1-3), 1968: 36(1-4), 1969: 37(1-4), 1970: 38(1-4), 1971: 39(1-4), 1972: 40(1-4), 1973: 41(1-4), 1974: 42(1-4), 1975: 43(1-4), 1976: 44(1-4), 1977: 45(1-4), 1978: 46(1-4), 1979: 47(1-4), 1980: 48(1-4), 1981: 49(1-4), 1982: 50(1-4), 1983: 51(1-4), 1984: 52(1-4), 1985: 53(1-4), 1986: 54(1-4), 1987: 55(1-4), 1988: 56(1-4), 1989: 57(1-4), 1990: 58(1-4), 1991: 59(1, S 1, 2-4), 1992: 60(1, S 1, 2-4), 1993: 61(1, S 1, 2-4), 1994: 62(1, S 1, 2-4), 1995: 63(1, S 1, 2-4), 1996: 64(1, S 1, 2-4), 1997: 65(1-5, S), 1998: 66(1-5), 1999: 67(1-6), 2000: 68(1-6), 2001: 69(1-6), 2002: 70(1-6), 2003: 71(1-6), 2004: 72(1-6), 2005: 73(1-6), 2006: 74(1-6), 2007: 75(1-6), 2008: 76(1-6), 2009: 77(1-6), 2010: 78(1-6), 2011: 79(1-6), 2012: 80(1-6), 2013: 81(1, S1, 2, S2, 3, S3, 4-6), 2014: 82(1, S1, 2, S2, 3-6), 2015: 83(1, S1, 2, S2, 3, S3, 4-6), 2016: 84(1, S 1, 2-6), 2017: 85(1, S1, 2, S2, 3-6), 2018: 86(1, S1, 2-6), 2019: 87(1, S1, 2-6), 2020: 88(1, S1, 2-6), 2021: 89(1, S1, 2-6), 2022: 90(1-6), 2023: 91(1-6), 2024: 92(1-6), 2025: 93(1-6), 2026: 94(1-2)
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CLOCKSS Archive
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Preserved
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2026-04-06
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21, 59 to 94
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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 : 74 (s1, 1-6); 75 (s1, 1-6)
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