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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 3, 5 to 12); 2 (, 1 to 7, 8-9, 10-11); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 10 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 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 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 5, 6-8, 9, 10, 11-12); 31 (, 1-3, 4 to 6, 7-8, 9 to 12); 32 (, 1 to 12); 33 (, 1 to 10, 11-12); 34 (, 1 to 7, 8-9, 10, 11-12); 35 (, 1 to 6, 7-8, 9, 10, 11-12); 36 (, 1 to 6, 7-8, 9, 10, 11-12); 37 (, 1 to 6, 7-8, 9, 10, 11-12); 38 (, 1 to 6, 7-8, 9, 10, 11-12); 39 (, 1 to 10, 11-12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 12); 44 (, 1 to 12); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 8); 51 (, 1 to 8); 52 (, 1 to 8); 53 (, 1 to 8); 54 (, 1 to 10); 55 (, 1 to 10); 56 (, 1 to 10); 57 (, 1 to 10); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 12); 63 (, 1 to 12); 64 (, 1 to 13); 65 (, 1 to 12); 66 (, 1 to 12); 67 (, 1 to 12); 68 (, 1 to 12); 69 (, 1 to 12); 70 (, 1 to 8 to 10 to 12); 71 (, 1, 2, 3-4, 5 to 12); 72 (, 1 to 12); 73 (, 1 to 6, 8 to 12); 74 (, 1 to 12); 75 (, 1 to 12); 1947; 1948; 1949; 1950; 1951; 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
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CLOCKSS Archive
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In Progress
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2026-02-09
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LOCKSS Archive
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In Progress
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2026-02-09
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Portico
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Preserved
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2026-02-12
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Preserved : 1947: 1(1-3, 5-12), 1948: 2(1-11), 1949: 3(1-12), 1950: 4(1-12), 1951: 5(1-12), 1952: 6(1-12), 1953: 7(1-12), 1954: 8(1-12), 1955: 9(1-12), 1956: 10(1-12), 1957: 11(1-12), 1958: 12(1-12), 1959: 13(1-12), 1960: 14(1-12), 1961: 15(1-12), 1962: 16(1, S1, 2-12), 1963: 17(1-12), 1964: 18(1-12), 1965: 19(1-12), 1966: 20(1-12), 1967: 21(1-12), 1968: 22(1-12), 1969: 23(1-12), 1970: 24(1-12), 1971: 25(1-12), 1972: 26(1-12), 1973: 27(1-12), 1974: 28(1-12), 1975: 29(1-12), 1976: 30(1-12), 1977: 31(1-12), 1978: 32(1-12), 1979: 33(1-12), 1980: 34(1-12), 1981: 35(1-12), 1982: 36(1-12), 1983: 37(1-12), 1984: 38(1-12), 1985: 39(1-12), 1986: 40(1-12), 1987: 41(1-12), 1988: 42(1, S 1, 2-12), 1989: 43(1-12), 1990: 44(1-12), 1991: 45(1-4), 1992: 46(1-4), 1993: 47(1-6), 1994: 48(1-6), 1995: 49(1-6), 1996: 50(1-8), 1997: 51(1-8), 1998: 52(1-8), 1999: 53(1-8), 2000: 54(1-10), 2001: 55(1-10), 2002: 56(1-10), 2003: 57(1-10)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 75
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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 64(1-12), 2011: 65(1-12), 2012: 66(1-12, s175-s177), 2013: 67(1-12, s178-s180), 2014: 68(1-12, s181), 2015: 69(1-12, S182, S183), 2016: 70(1-9, 9, B, 10-12, S184, S185), 2017: 71(1-12), 2018: 72(1-12), 2019: 73(1-12, S186), 2020: 74(1-12, S187), 2021: 75(1-12), 2022: 2022(1), 2023: 2023(1), 2024: 2024(1), 2025: 2025(1), 2026: 2026(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2022: 2022, 2023: 2023, 2024: 2024, 2025: 2025, 2026: 2026
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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 : 6 (, 1 to 9, 11, 12); 7 (, 1 to 8, 9B, 11, 12); 58 (, 1 to 9, 11, 12); 59 (, 1 to 9, 11, 12); 61 (s152, 1 to 9, 11, 12); 62 (, 1 to 9, 11, 12); 63 (, 1 to 9, 11, 12); 64 (, 1 to 9, 11 to 13); 65 (, 1 to 9, 11, 12); 66 (, 1 to 9, 11, 12); 67 (, 1 to 9, 11, 12); 68 (, 1 to 9, 11, 12); 69 (, 1 to 9, 11, 12); 71 (1, 2, 3-4, 5 to 9, 11, 12); 72 (1 to 9, 11, 12); 73 (S186, 1, 2, 4 to 9, 11, 12); 74 (S187, 1 to 9, 11, 12); 75 (1 to 9, 11, 12)
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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 : 6 (, 1 to 9, 11, 12); 7 (, 1 to 9, 11, 12); 58 (, 1 to 9, 11, 12); 59 (, 1 to 9, 11, 12); 61 (s152, 1 to 9, 11, 12); 62 (, 1 to 9, 11, 12); 63 (, 1 to 9, 11, 12); 64 (, 1 to 9, 11 to 13); 65 (, 1 to 9, 11, 12); 66 (, 1 to 9, 11, 12); 67 (, 1 to 9, 11, 12); 68 (, 1 to 9, 11, 12); 69 (, 1 to 9, 11, 12); 71 (1, 2, 3-4, 5 to 9, 11, 12); 72 (1 to 9, 11, 12); 73 (S186, 1, 2, 4 to 9, 11, 12); 74 (S187, 1 to 9, 11, 12); 75 (1 to 9, 11, 12)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 60 (s150, 1-12); 61 (s152, 1-12)
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