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