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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 12); 2 (, 1 to 12); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 18); 7 (, 1 to 18); 8 (, 1 to 18); 9 (, 1 to 18); 10 (, 1 to 18); 11 (, 1 to 18); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1A, 2 to 12); 26 (, 1 to 3 to 5 to 7 to 9 to 12); 27 (, 1 to 12); 28 (, 1 to 3 to 5 to 12); 29 (, 1 to 12); 30 (, 1 to 24); 31 (, 1 to 24); 32 (, 1 to 24); 33 (, 1 to 24); 34 (, 1 to 24); 35 (, 1 to 24); 36 (, 1 to 24); 37 (, 1 to 24); 38 (, 1 to 24); 39 (, 1 to 24); 40 (, 1 to 24); 41 (, 1 to 24); 42 (, 1 to 24); 43 (, 1 to 13, 15 to 50); 44 (, 1 to 50); 45 (, 1 to 50); 46 (, 1 to 50); 47 (, 1 to 50); 48 (, 1 to 50); 49 (, 1 to 50); 50 (, 1 to 50); 51 (, 1 to 50); 52 (, 1 to 50); 53 (, 1 to 50); 54 (, 1 to 50); 55 (, 1 to 50); 56 (, 1 to 5); 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 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
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Internet Archive
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Preserved
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2025-08-08
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1 to 2
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CLOCKSS Archive
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Preserved
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2026-02-09
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41 to 59
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 1(1-12), 1969: 2(1-12), 1970: 3(1-12), 1971: 4(1-12), 1972: 5(1-12), 1973: 6(1-18), 1974: 7(1-18), 1975: 8(1-18), 1976: 9(1-18), 1977: 10(1-18), 1978: 11(1-18), 1979: 12(1-12), 1980: 13(1-12), 1981: 14(1-12), 1982: 15(1-12), 1983: 16(1-12), 1984: 17(1-12), 1985: 18(1-12), 1986: 19(1-12), 1987: 20(1-12), 1988: 21(1-10, 10, S, 11-12), 1989: 22(1-12), 1990: 23(1-12), 1991: 24(1-12), 1992: 25(1, 1, A, 2-12), 1993: 26(1-4, 4, A, 5-8, 8, B, 9-12), 1994: 27(1-12), 1995: 28(1-4, 4, A, 5-12), 1996: 29(1-12), 1997: 30(1-24), 1998: 31(1-24), 1999: 32(1-24), 2000: 33(1-24), 2001: 34(1-24), 2002: 35(1-24), 2002/2003: 36(5, 13)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 36(17-24), 2004: 37(1-24), 2005: 38(1-24), 2006: 39(1-24), 2007: 40(1-24), 2008: 41(1-24), 2009: 42(1-24), 2010: 43(1-50), 2011: 44(1-50), 2011/2012: 45(1-16, 22-50), 2012/2013: 46(1-3, 6-47, 49), 2013/2014: 47(1-50), 2015: 48(1-50), 2015/2016: 49(1-50), 2016/2017: 50(1-50), 2017/2018: 51(1-50), 2019: 52(1-50), 2019/2020: 53(1-50), 2021: 54(1-50), 2022: 55(1-50), 2023: 56(1-50), 2024: 57(1-50), 2025: 58(1-50), 2026: 59(1-6)
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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 9, 11 to 19, 21 to 24); 5 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 24); 34 (1 to 9, 11 to 19, 21 to 24); 35 (1 to 9, 11 to 19, 21 to 24); 36 (1 to 9, 11 to 19, 21 to 24); 37 (1 to 9, 11 to 19, 21 to 24); 38 (1 to 9, 11 to 19, 21 to 24); 39 (1 to 9, 11 to 19, 21 to 24); 41 (1 to 9, 11 to 19, 21 to 24); 42 (1 to 9, 11 to 19, 21 to 24); 43 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 44 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 45 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 46 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 47 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 48 (1 to 9, 11 to 17, 19, 21 to 29, 31 to 38, 41 to 49); 49 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 51 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 52 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 53 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 54 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 55 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 56 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 57 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 58 (1 to 9, 11 to 19, 21 to 29, 31 to 35)
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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 9, 11 to 19, 21 to 24); 5 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 24); 34 (1 to 9, 11 to 19, 21 to 24); 35 (1 to 9, 11 to 19, 21 to 24); 36 (1 to 9, 11 to 19, 21 to 24); 37 (1 to 9, 11 to 19, 21 to 24); 38 (1 to 9, 11 to 19, 21 to 24); 39 (1 to 9, 11 to 19, 21 to 24); 41 (1 to 9, 11 to 19, 21 to 24); 42 (1 to 9, 11 to 19, 21 to 24); 43 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 44 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 45 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 46 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 47 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 48 (1 to 9, 11 to 17, 19, 21 to 29, 31 to 38, 41 to 49); 49 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 51 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 52 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 53 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 54 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 55 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 56 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 57 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 58 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 44)
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