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