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Portico
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Preserved
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2026-02-12
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Preserved : 1958: 13(1-5), 1959: 14(1-5), 1960: 15(1-5), 1961: 16(1-5), 1962: 17(1-5), 1963: 18(1-5), 1964: 19(1-5), 1965: 20(1-5), 1966: 21(1-5), 1966: 22(1-5), 1967: 23(1-5), 1968: 24(1-5), 1969: 25(1-5), 1970: 26(1-5), 1970: 27(1-5), 1971: 28(1-5), 1972: 29(1-5), 1972: 30(1-5), 1973: 31(1-5), 1973: 32(1-5), 1974: 34(1-6), 1975: 35(1-6), 1975: 36(1-6), 1976: 37(1-6), 1977: 38(1-6), 1977: 39(1-6), 1978: 40(1-6), 1978: 41(1-6), 1979: 42(1-5), 1980: 43(1-5), 1980: 44(1-5), 1981: 45(1-5), 1981: 46(1-5), 1982: 47(1-5), 1982: 48(1-5), 1983: 49(1-5), 1983: 50(1-5), 1984: 51(1-5), 1984: 52(1-5), 1985: 53(1-5), 1985: 54(1‐5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1938: 1(1-3), 1939: 2(1-3), 1940: 3(1-3), 1940: 4(1-3), 1941: 5(1-3), 1943: 6(1-3), 1944: 7(1-3), 1944: 8(1-3), 1944: 9(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1955: 10(1-3), 1956: 11(1-3), 1957: 12(1‐3)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 55 (1‐5); 56 (, 1‐5); 57 (, 1‐5); 58 (, 1‐5); 59 (, 1‐5); 60 (, 1‐5); 61 (, 1‐5); 62 (, 1‐5); 63 (, 1‐5); 64 (, 1‐5); 65 (, 1‐5); 66 (, 1‐5); 67 (, 1‐5); 68 (, 1 to 3, 4‐5); 69 (, 1‐5); 70 (, 1‐5); 71 (, 1‐5); 72 (, 1‐5); 73 (, 1‐5); 74 (, 1‐5); 75 (, 1‐5); 76 (, 1‐5); 77 (, 1‐5); 78 (, 1‐5); 81 (, 1 to 3); 82 (, 1, 2-3, 4, 5); 83 (, 1, 2, 4-5); 84 (, 1-2, 3-4, 5); 85 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 86 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 87 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 88 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 89 (, 1-2, 3-6, 7-8, 9-10, 11-12); 90 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 91 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 92 (, 1 to 6); 93 (, 1 to 6); 94 (, 1 to 6); 95 (, 1 to 6); 96 (, 1 to 6); 97 (, 1 to 6); 98 (, 1 to 6); 99 (, 1 to 6); 100 (, 1 to 6); 101 (, 1 to 6); 102 (, 1 to 6); 103 (, 1 to 6); 104 (, 1 to 6); 105 (, 1 to 6); 106 (, 1 to 6); 107 (, 1 to 6); 108 (, 1 to 6); 109 (, 1 to 3); 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 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 : 1986: 55(1-5), 1986: 56(1-5), 1987: 57(1-5), 1987: 58(1-5), 1988: 59(1-5), 1988: 60(1-5), 1989: 61(1-5), 1989: 62(1-5), 1990: 63(1-5), 1990: 64(1-5), 1991: 65(1-5), 1991: 66(1-5), 1992: 67(1-5), 1992: 68(1-5), 1993: 69(1-5), 1993: 70(1-5), 1994: 71(1-5), 1994: 72(1-5), 1995: 73(1-5), 1995: 74(1-5), 1996: 75(1-5), 1996: 76(1‐5)
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CLOCKSS Archive
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Preserved
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2026-02-09
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65 to 110
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 81(1-3), 1999: 82(1, 4-5), 2000: 83(1-3), 2000: 84(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 2008: 92(1-5), 2009: 93(1-6), 2010: 94(1-6), 2011: 95(1-6), 2012: 96(1-6), 2013: 97(1-6), 2014: 98(1-6), 2015: 99(1, S1, 2-6), 2016: 100(1-6), 2017: 101(1, S1, 2-6), 2018: 102(1, S1, 2-6), 2019: 103(1-6), 2020: 104(1-6), 2021: 105(1, S1, 2, S2, 3-6), 2022: 106(1-6), 2023: 107(1, S1, 2-6), 2024: 108(1, S1, 2-6), 2025: 109(1-6), 2026: 110(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 (1 to 6); 8 (1?5); 9 (3?4, 5?6, 7?8, 9?1, 11?12); 11 (, 1 to 6); 12 (, 1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (S1, 1 to 3, 5, 6); 16 (1 to 6); 17 (S1, 1 to 6); 18 (S1, 1 to 6); 19 (1 to 5); 77 (1?5); 78; 79; 81 (2, 3); 82 (1, 2?3, 4, 5); 83 (1 to 3, 4?5); 84 (1?2, 3?4, 5); 85 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 86 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 87 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 88 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 89 (1?2, 3?6, 7?8, 9?1, 11?12); 91 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 92 (1 to 6); 93 (1 to 6); 94 (1 to 6); 95 (1 to 6); 96 (1 to 6); 97 (, 1 to 6); 98 (1 to 6); 99 (, 1 to 6)
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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 6); 8 (1?5); 9 (3?4, 5?6, 7?8, 9?1, 11?12); 11 (, 1 to 6); 12 (, 1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (S1, 1 to 3, 5, 6); 16 (1 to 6); 17 (S1, 1 to 6); 18 (S1, 1 to 6); 19 (1 to 5); 77 (1?5); 78; 79; 81 (2, 3); 82 (1, 2?3, 4, 5); 83 (1 to 3, 4?5); 84 (1?2, 3?4, 5); 85 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 86 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 87 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 88 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 89 (1?2, 3?6, 7?8, 9?1, 11?12); 91 (1?2, 3?4, 5?6, 7?8, 9?1, 11?12); 92 (1 to 6); 93 (1 to 6); 94 (1 to 6); 95 (1 to 6); 96 (1 to 6); 97 (, 1 to 6); 98 (1 to 6); 99 (, 1 to 6)
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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 : 90 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 91 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12)
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