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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 8); 3 (, 1 to 8); 4 (, 1 to 8); 5 (, 1, 2-3, 4 to 9); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 5); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 4); 17 (, 1, 2); 18 (, 1, 2); 19 (, 1, 2); 20 (, 1, 2); 21 (, 1, 2); 22 (, 1, 2); 23 (, 1, 2); 24 (, 1, 2); 25 (, 1, 2); 26 (, 1, 2); 27 (, 1, 2); 28 (, 1, 2); 29 (, 1 to 3); 30 (, 1 to 3); 31 (, 1 to 3); 32 (, 1 to 3); 33 (, 1 to 3); 34 (, 1 to 3); 35 (, 1 to 3); 36 (, 1 to 3); 37 (, 1 to 3); 38 (, 1 to 3); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1, 3, 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); 1928; 1929; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 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; 2022; 2023; 2024
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Internet Archive
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Preserved
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2025-08-08
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1 to 37
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 55
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 56
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LOCKSS Archive
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In Progress
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2026-02-09
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56
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Portico
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Preserved
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2026-02-12
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Preserved : 1928/1929/1931/1932: 1(1-4), 1933/1934/1935: 2(1-8), 1936/1937/1938/1939/1940: 3(1-8), 1941/1942/1943/1944: 4(1-8), 1945/1946/1947/1948/1950/1951: 5(1-9), 1952/1953/1954/1955/1956: 6(1-6), 1957/1958/1959/1960: 7(1-6), 1960/1961/1962: 8(1-5), 1963/1964/1965: 9(1-6), 1966/1967/1968: 10(1-6), 1969/1970/1971: 11(1-6), 1972/1973/1974: 12(1-6), 1975/1976/1977: 13(1-6), 1978/1979/1980: 14(1-6), 1981/1982/1983: 15(1-6), 1984/1985: 16(1-4), 1986: 17(1-2), 1987: 18(1-2), 1988: 19(1-2), 1989: 20(1-2), 1990: 21(1-2), 1991: 22(1-2), 1992: 23(1-2), 1993: 24(1-2), 1994: 25(1-2), 1995: 26(1-2), 1996: 27(1-2), 1997: 28(1-2), 1998: 29(1-3), 1999: 30(1-3), 2000: 31(1-3), 2001: 32(1-3), 2002: 33(1-3), 2003: 34(1-3), 2004: 35(1-3), 2005: 36(1-3), 2006: 37(1-3), 2007: 38(1-3), 2008: 39(1-4), 2009: 40(1-4), 2010: 41(1-4), 2011: 42(1-4), 2012: 43(1-4), 2013: 44(1-4), 2014: 45(1-4), 2015: 46(1-4), 2016: 47(1-4), 2017: 48(1-4), 2018: 49(1-4), 2019: 50(1-4), 2020: 51(1-4), 2021: 52(1-4), 2022: 53(1-4), 2023: 54(1-4), 2024: 55(1-4), 2025: 56(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 : 3 (1 to 3); 4 (1 to 4); 5 (1 to 4); 28 (1, 2); 29 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (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); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4)
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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 : 1 (1-4); 2 (1-8); 3 (1-8); 4 (1-6); 5 (1, 2-3, 4, 5, 7-9); 6 (1-6); 7 (1-6); 8 (1-5); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1-4); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1-3); 30 (1-3); 31 (1-3); 32 (1-3); 33 (1-3); 34 (1-3); 35 (1-3); 36 (1-3); 37 (1-3); 38 (1-3); 39 (1-4)
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Library of Congress
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Preserved
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2025-04-07
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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 3)
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