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