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Internet Archive
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Preserved
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2025-08-08
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52 to 56
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 65 (2, 3); 66 (, 1 to 3); 67 (, 1 to 3); 68 (, 1 to 3); 69 (, 1 to 3); 70 (, 1 to 3); 71 (, 1 to 3); 72 (, 1 to 3); 73 (, 1 to 3); 74 (, 1 to 3); 75 (, 1 to 3); 76 (, 1 to 3); 77 (, 1 to 3); 78 (, 1, 2); 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.50:1-2;vol.51:1-2;vol.52:1-2;vol.53:1-2;vol.54:1-2;vol.55:1-2;vol.56:1-2;vol.57:1-2;vol.58:1-2;vol.59:1-2;vol.60:1-2;vol.61:1-2;vol.62:1-3;vol.63:1-3;vol.64:1-3;vol.65:1-3;vol.66:1-3;vol.67:1-3;vol.68:1-3;vol.69:1-3;vol.70:1-3;vol.71:1-3;vol.72:1-3;vol.73:1-3,sup.S1
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 18(1-2), 1966: 19(1-2), 1967: 20(1-2), 1968: 21(1-2), 1969: 22(1-2), 1970: 23(1-2), 1971: 24(1-2), 1972: 25(1-2), 1973: 26(1-2), 1974: 27(1-2), 1975: 28(1-2), 1976: 29(1-2), 1977: 30(1-2), 1978: 31(1-2), 1979: 32(1-2), 1980: 33(1-2), 1981: 34(1-2), 1982: 35(1-2), 1983: 36(1-2), 1984: 37(1-2), 1985: 38(1-2), 1986: 39(1-2), 1987: 40(1-2), 1988: 41(1-2), 1989: 42(1-2), 1990: 43(1-2), 1991: 44(1-2), 1992: 45(1-2), 1993: 46(1-2), 1994: 47(1-2), 1995: 48(1-2), 1996: 49(1-2), 1997: 50(1-2), 1998: 51(1-2), 1999: 52(1-2), 2000: 53(1-2), 2001: 54(1-2), 2002: 55(1-2), 2003: 56(1-2), 2004: 57(1-2), 2005: 58(1-2), 2006: 59(1-2), 2007: 60(1-2), 2008: 61(1-2), 2009: 62(1-3), 2010: 63(1-3), 2011: 64(1-3), 2012: 65(1-3), 2013: 66(1-3), 2014: 67(1-3), 2015: 68(1-3), 2016: 69(1-3), 2017: 70(1-3), 2018: 71(1-3), 2019: 72(1-3), 2020: 73(1, S1, 2-3), 2021: 74(1, S1, 2-3), 2022: 75(1-3), 2023: 76(1-3), 2024: 77(1-3), 2025: 78(1-3), 2026: 79(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 79
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Portico
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Preserved
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2026-02-12
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Preserved : 1947/1948: 1(1-3), 1949: 2(1-3), 1950: 3(1-3), 1951: 4(1-3), 1952: 5(1-3), 1953: 6(1-2), 1954: 7(1-2), 1955: 8(1-2), 1956: 9(1-2), 1957: 10(1-2), 1958: 11(1-2), 1959: 12(1-2), 1960: 13(1-2), 1961: 14(1-2), 1962: 15(1-2), 1963: 16(1-2), 1964: 17(1-2)
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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 : 5 (1, 2); 6 (1, 2); 7 (1 to 3); 51 (1, 2); 52 (1, 2); 53 (1, 2); 54 (1, 2); 55 (1, 2); 56 (1, 2); 57 (1, 2); 58 (1, 2); 59 (1, 2); 61 (1, 2); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 71 (1 to 3); 72 (1 to 3); 73 (S1, 1 to 3); 74 (S1, 1 to 3); 75 (1 to 3); 76 (1 to 3); 77 (1 to 3); 78 (1 to 3)
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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 : 5 (1, 2); 6 (1, 2); 7 (1 to 3); 51 (1, 2); 52 (1, 2); 53 (1, 2); 54 (1, 2); 55 (1, 2); 56 (1, 2); 57 (1, 2); 58 (1, 2); 59 (1, 2); 61 (1, 2); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 71 (1 to 3); 72 (1 to 3); 73 (S1, 1 to 3); 74 (S1, 1 to 3); 75 (1 to 3); 76 (1 to 3); 77 (1 to 3); 78 (1, 2)
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