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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 4); 5 (, 1 to 4); 6 (, 1, 2/3, 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 6); 60 (, 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 (, 1-2, 3 to 8); 68 (, 1 to 8); 69 (, 1, 2, 4 to 8); 70 (, 1 to 6); 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 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; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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55 to 60
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LOCKSS Archive
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Preserved
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2026-02-09
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56, 57
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Portico
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Preserved
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2026-02-12
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Preserved : 1952/1953/1954: 1(1-4), 1955/1956: 2(1-4), 1957/1958: 3(1-4), 1959: 4(1-4), 1960: 5(1-4), 1961: 6(1, S 1, 2-4), 1962: 7(1-4), 1963: 8(1-4), 1964: 9(1, S 1, 2-4), 1965: 10(1-4), 1966: 11(1-4), 1967: 12(1, S 1, 2-4), 1968: 13(1-4), 1969: 14(1-4), 1970: 15(1, S 1, 2-4), 1971: 16(1-4), 1972: 17(1, S 1, 2-4), 1973: 18(1-4), 1974: 19(1-4), 1975: 20(1, S 1, 2-4), 1976: 21(1-4), 1977: 22(1-4), 1978: 23(1, S 1, 2-4), 1979: 24(1-4), 1980: 25(1, S 1, 2-4), 1981: 26(1-4), 1982: 27(1, S 1, 2-4), 1983: 28(1-4), 1984: 29(1, S 1, 2-4), 1985: 30(1-4), 1986: 31(1, S 1, 2-4), 1987: 32(1-4), 1988: 33(1, S 1, 2-4), 1989: 34(1-4), 1990: 35(1, S 1, 2, S 2, 3-4), 1991: 36(1-4), 1992: 37(1, S 1, 2, S 2, 3-4), 1993: 38(1-4), 1994: 39(1, S 1, 2, S 2, 3-4), 1995: 40(1-4), 1996: 41(1, S 1, 2, S 2, 3-4), 1997: 42(1-4), 1998: 43(1, S 1, 2, S 2, 3-4), 1999: 44(1-4), 2000: 45(1, S 1, 2, S 2, 3, S 3, 4, S 4), 2001: 46(1, S 1, 2-4), 2002: 47(1, S 1, 2, S 2, 3, S 3, 4), 2003: 48(1, S 1, 2-4), 2004: 49(1, S 1, 2, S 2, 3-4), 2005: 50(1, S 1, 2-4), 2006: 51(1, S 1, 2, S 2, 3-4), 2007: 52(1, S 1, 2-4), 2008: 53(1, S 1, 2, S 2, 3-4), 2009: 54(1, S 1, 2-4), 2010: 55(1, S 1, 2, S 2, 3-4), 2011: 56(1-4), 2012: 57(1, S 1, 2-4), 2013: 58(1-4), 2014: 59(1, S 1, 2-6), 2015: 60(1, S 1, 2, S 2, 3-6)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 69
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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 71
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LOCKSS Archive
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In Progress
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2026-02-09
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70
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 22(1-4), 1978: 23(1-4), 1979: 24(1-4), 1980: 25(1-4), 1981: 26(1-4), 1982: 27(1-4), 1983: 28(1-4), 1984: 29(1-4), 1985: 30(1-4), 1986: 31(1-4), 1987: 32(1-4), 1988: 33(1-4), 1989: 34(1-4), 1990: 35(1-4), 1991: 36(1-4), 1992: 37(1-4), 1993: 38(1-4), 1994: 39(1-4), 1995: 40(1-4), 1996: 41(1-4), 1997: 42(1-4), 1998: 43(1-4), 1999: 44(1-4), 2000: 45(1-4), 2001: 46(1-4), 2002: 47(1-4), 2003: 48(1-4), 2004: 49(1-4), 2005: 50(1-4), 2006: 51(1-4), 2007: 52(1-4), 2008: 53(1-4), 2009: 54(1-4), 2010: 55(1-4), 2011: 56(1-4), 2012: 57(1-4), 2013: 58(1-4), 2014: 59(1-6), 2015: 60(1-6), 2016: 61(1-6), 2017: 62(1-8), 2018: 63(1-8), 2019: 64(1-8), 2020: 65(1-8), 2021: 66(1-8), 2022: 67(1-2, sup1, 3-8), 2023: 68(1-8), 2024: 69(1-8), 2025: 70(1-8), 2026: 71(1-2)
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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 : 62 (2 to 8); 63 (1 to 5)
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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 : 62 (2 to 8); 63 (S1, 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 : 5 (sup1, 1 to 4); 6 (sup1, 1 to 6); 7 (1, 2, 4); 42 (1 to 4); 43 (sup1, 1 to 4); 44 (1 to 4); 45 (sup1, 1 to 4); 46 (sup1, 1 to 4); 47 (sup1, 1 to 4); 48 (sup1, 1 to 4); 49 (sup1, 1 to 4); 51 (sup2, 1 to 4); 52 (sup1, 1 to 4); 53 (sup1, 1 to 4); 54 (sup1, 1 to 4); 55 (sup2, 1 to 4); 56 (1 to 4); 57 (sup1, 1 to 4); 58 (1 to 4); 59 (sup1, 1 to 6); 61 (sup1, 1 to 6); 62 (1 to 8); 63 (S1, 1 to 8); 64 (sup1, 1 to 8); 65 (S1, 1 to 8); 66 (1 to 8); 67 (S1, 1-2, 3 to 8); 68 (1 to 8); 69 (sup1, 1 to 8)
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Library of Congress
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Preserved
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2025-04-07
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61 (S2, sup2); 62 (1 to 8); 63 (sup1, S1, 1 to 8); 64 (sup1, 1 to 4, 6 to 8); 65 (S1, 1 to 8); 66 (1 to 8); 67 (S1, 1-2, 3 to 8); 68 (1 to 8); 69 (sup1, 1 to 8); 70 (2)
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