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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); 2 (, 1); 3 (, 1); 4 (, 1, 2); 5 (, 1, 2); 6 (, 1, 2); 7 (, 1, 2); 8 (, 1, 2); 9 (, 1, 2); 10 (, 1, 2); 11 (, 1, 2); 12 (, 1, 2); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1-2, 3, 4, 5-6, 7, 8); 16 (, 1-2, 3, 4); 17 (, 1-2, 3-4); 18 (, 1, 2-3, 4); 19 (, 1, 2, 3-4); 20 (, 1, 2-4); 21 (, 1 to 4); 22 (, 1, 2-3, 4, 5, 6-8); 23 (, 1-2, 3-4, 5-6); 24 (, 1 to 4); 25 (, 1-2, 3, 4); 26 (, 1-2, 3, 4); 27 (, 1-2, 3, 4); 28 (, 1-2, 3, 4); 29 (, 1-2, 3, 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1, 2, 3-4); 33 (, 1, 2, 3-4); 34 (, 1-2, 3, 4); 35 (, 1, 2-3, 4); 36 (, 1, 2, 3-4); 37 (, 1 to 4); 38 (, 1-2, 3, 4); 39 (, 1, 2-3, 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 (, 1-2, 3, 4); 56 (, 1 to 4); 57 (, 1, 2); 1972; 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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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 29(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 38(S 1, S 2, S 3), 2007: 39(S 1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 41(4), 2010: 42(1, S 1, 2-4), 2011: 43(S 1, 2, S 2, 3-4), 2012: 44(1, S 1, 2-4), 2013/2014: 45(1, S 1, 2-4), 2014: 46(1-4), 2014: 47(1-2)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 56
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 57
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LOCKSS Archive
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In Progress
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2026-02-09
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57
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 5(1-2), 1977: 6(1-2), 1978: 7(1-2), 1978: 8(1-2), 1979: 9(1-2), 1979: 10(1-2), 1980: 11(1-2), 1981: 12(1-2), 1982: 13(1-6), 1983: 14(1-6), 1984: 15(3-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 16(3-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 18(1, 4), 1988: 19(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 20(1), 1989: 21(1-4), 1990: 22(1, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 24(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 25(3-4), 1994: 26(3-4), 1995: 27(3-4), 1996: 28(3-4), 1997: 29(1-4), 1998: 30(1-4), 1999: 31(1-4), 2000: 32(1-4), 2001: 33(1-2), 2002: 34(1-2, sup1, 3-4), 2003: 35(1-4), 2004: 36(1-4), 2005: 37(1-4), 2006: 38(1-4), 2007: 39(1-4), 2008: 40(1, Suppl 1, 2, Suppl 2, 3, Suppl 3, 4), 2009: 41(1-4), 2010: 42(1-4), 2011: 43(1-4), 2012: 44(1-4), 2013: 45(1-4), 2014: 46(1-4), 2015: 47(1-4), 2016: 48(1-4), 2017: 49(1-4), 2018: 50(1-4), 2019: 51(1-4), 2020: 52(1-4), 2021: 53(1-4), 2022: 54(1-4), 2023: 55(1-4), 2024: 56(1-4), 2025: 57(1-4)
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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 : 3 (1 to 4); 4 (sup1, 1 to 4); 5 (1 to 4); 29 (1-2, 3, 4); 31 (1 to 4); 32 (sup1, 1, 2, 3-4); 33 (1, 2, 3-4); 34 (sup1, 1-2, 3, 4); 35 (sup2, 1, 2-3, 4); 36 (1, 2, 3-4); 37 (1 to 4); 38 (sup1, 1-2, 3, 4); 39 (sup1, 1, 2-3, 4); 41 (sup1, 1 to 4); 42 (sup1, 1 to 4); 43 (sup1, 1 to 4); 44 (sup1, 1 to 4); 45 (sup1, 1 to 4); 46 (1 to 4); 47 (sup1, 1 to 4); 48 (sup1, 1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1-2, 3, 4); 56 (1 to 4); 57 (1)
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Library of Congress
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Preserved
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2025-04-07
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42 (sup1, 1 to 4); 43 (sup2, sup1, 1 to 4); 44 (sup1, 1 to 4); 45 (sup1, 1 to 4); 46 (1 to 4); 47 (sup1, 1 to 4); 48 (sup1, 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 (1-2, 3, 4); 56 (1, 2)
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