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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 3); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 14 (, 1, 2, 3-4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1-2, 3, 4); 18 (, 1, 2, 3-4); 19 (, 1, 2-3, 4); 20 (, 1, 2-3, 4); 21 (, 1-2, 3-4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1, 2-3, 4, 5); 27 (, 1 to 5); 28 (, 1 to 5); 29 (, 1 to 5); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1-2, 3 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1, 5, 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1, 2, 4 to 6); 45 (, 1 to 6); 46 (, 2 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 4); 1968; 1969; 1970; 1971; 1972; 1974; 1975; 1976; 1977; 1979; 1985; 1986; 1987; 1988; 1989; 1990; 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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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 52
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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 54
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LOCKSS Archive
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In Progress
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2026-02-09
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53
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 1(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 2(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 3(1-2), 1972: 4(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 5(1-2), 1975: 6(1-2), 1976: 7(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 8(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1979: 9(1-2), 1980: 10(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 11(1-2), 1982: 12(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 13(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 14(1-2), 1986: 15(1-2), 1987: 16(1-2), 1988: 17(3-4), 1989: 18(1-2), 1990: 19(1, 4), 1992: 20(1, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 22(1-4), 1995: 23(1-4), 1996: 24(1-4), 1997: 25(1-4), 1998: 26(1-5), 1999: 27(1-5), 2000: 28(1-5), 2001: 29(1-5), 2002: 30(1-4), 2003: 31(1-4), 2004: 32(1-6), 2005: 33(1-6), 2006: 34(1-6), 2007: 35(1-6), 2008: 36(1-6), 2009: 37(1-6), 2010: 38(1-6), 2011: 39(1-6), 2012: 40(1-6), 2013: 41(1-6), 2014: 42(1-6), 2015: 43(1-6), 2016: 44(1-6), 2017: 45(1-6), 2018: 46(1-6), 2019: 47(1-6), 2020: 48(1-6), 2020/2021: 49(1-6), 2021/2022: 50(1-6), 2023: 51(1-6), 2024: 52(1-6), 2025: 53(1-6), 2026: 54(1)
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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 (1, 2-3, 4 to 6); 5 (1 to 6); 25 (1 to 4); 26 (1, 2-3, 4, 5); 27 (1 to 5); 28 (1 to 5); 29 (1 to 5); 31 (1 to 4); 32 (1 to 6); 33 (1 to 6); 34 (1-2, 3 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1, 2)
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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 (1-4); 3 (1-4); 4 (1-3); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-3); 9 (1-4); 10 (1-4); 11 (1-4, 5-6); 12 (1-4, 5-6); 13 (1, 2); 14 (1, 2, 3-4); 15 (1-4); 16 (1-4); 17 (1-2, 3, 4); 18 (1, 2, 3-4); 19 (1, 2-3, 4); 20 (1, 2-3); 21 (3-4); 22 (1, 3, 4); 23 (1, 2, 4); 24 (1-4); 25 (1-4); 26 (1, 2-3, 4, 5); 27 (1-5); 28; 31 (3, 4); 32 (1-3, 6); 33 (4); 34 (1-2, 3-6); 35 (1-6); 36 (1-6)
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Library of Congress
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Preserved
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2025-04-07
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38 (2 to 6); 39 (1 to 6); 40 (1, 2-3, 4 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6)
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