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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 21 (1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1, 2, 3-4, 5 to 9, 10-11, 12); 25 (, 1-2, 3 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 36 (, 1, 2, 3-4, 5-6); 37 (, 1 to 4, 5-6); 38 (, 1, 2-3, 4 to 6); 39 (, 1 to 6); 40 (, 1, 2-3, 4, 5-6); 41 (, 1 to 4, 5-6); 42 (, 1 to 3, 4-5, 6); 43 (, 1, 2-3, 4 to 6); 44 (, 1-2, 3, 4-5, 6); 45 (, 1, 2, 3-4, 5-6); 46 (, 1-2, 3 to 6); 47 (, 1-2, 3-4, 5, 6); 48 (, 1, 2, 3-4, 5, 6); 49 (, 1, 2-3, 4 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1, 2-3, 4 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); 60 (, 1 to 6); 61 (, 1 to 6); 62 (, 1, 3 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 6); 69 (, 1 to 10, 12); 70 (, 1 to 12); 71 (, 1 to 4); 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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12 to 50
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 70
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 58, 60 to 71
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LOCKSS Archive
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In Progress
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2026-02-09
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71
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Portico
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Preserved
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2026-02-12
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Preserved : 1955: 1(1-3), 1955/1956: 2(1-4), 1956/1957: 3(1-4), 1957/1958: 4(1-4), 1958/1959: 5(1-4), 1959/1960: 6(1-6), 1961: 7(1-5), 1962: 8(1-6), 1963: 9(1-9), 1964: 10(1-12), 1965: 11(1-12), 1966: 12(1-12), 1967: 13(1-12), 1968: 14(1-12), 1969: 15(1-12), 1970: 16(2-12), 1971: 17(1-12), 1972: 18(1-12), 1973: 19(1-12), 1974: 20(1-12), 1975: 21(1-12), 1976: 22(1-12), 1977: 23(1-12), 1978: 24(1-12), 1979: 25(1-12), 1980: 26(1-12), 1981: 27(1-12), 1982: 28(1-12), 1983: 29(1-12), 1984: 30(1-6), 1985: 31(1-6), 1986: 32(1-6), 1987: 33(1-6), 1988: 34(1-6), 1989: 35(1-6), 1990: 36(1-6), 1991: 37(1-6), 1992: 38(1-6), 1993: 39(1-6), 1994: 40(1-6), 1995: 41(1-6), 1996: 42(1-6), 1997: 43(1-6), 1998: 44(1-6), 1999: 45(1-6), 2000: 46(1-6), 2001: 47(1-6), 2002: 48(1-6), 2003: 49(1-6), 2004: 50(1-6), 2005: 51(1-6), 2006: 52(1-6), 2007: 53(1-6), 2008: 54(1-6), 2009: 55(1-6), 2010: 56(1-6), 2011: 57(1-6), 2012: 58(1-6), 2013: 59(1-6), 2014: 60(1-6), 2015: 61(1-6), 2016: 62(1-6), 2017: 63(1-6), 2018: 64(1-6), 2019: 65(1-6), 2020: 66(1-6), 2021: 67(1-6), 2022: 68(1-6), 2023: 69(1-12), 2024: 70(1-8, 11-12), 2025: 71(1-8)
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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 : 5 (1 to 6); 6 (1 to 6); 7 (1 to 9, 11, 12); 43 (1, 2-3, 4 to 6); 44 (1-2, 3, 4-5, 6); 45 (1, 2, 3-4, 5-6); 46 (1-2, 3 to 6); 47 (1-2, 3-4, 5, 6); 48 (1, 2, 3-4, 5, 6); 49 (1, 2-3, 4 to 6); 51 (1 to 6); 52 (1, 2-3, 4 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 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 9, 11, 12); 71 (1, 3)
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Library of Congress
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Preserved
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2025-04-07
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62 (1); 63 (2 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 12); 70 (1 to 10)
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