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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 (, 1, 2); 6 (, 1 to 3); 7 (, 1 to 3); 8 (, 1, 2); 9 (, 1 to 3); 15 (, 1, 2); 16 (, 1 to 3); 17 (, 1, 2); 18 (, 1); 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, 2); 30 (, 1, 2); 31 (, 1, 2); 32 (, 1, 2); 33 (, 1, 2); 34 (, 1-2); 35 (, 1, 2); 36 (, 1, 2); 37 (, 1, 2); 38 (, 1, 2-3); 39 (, 1 to 3); 40 (, 1 to 3); 41 (, 2-3); 42 (, 1, 2-3, 4); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 4); 46 (, 1 to 4); 47 (, 1, 2, 3-4); 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 3); 1971; 1975; 1976; 1977; 1978; 1979; 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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LOCKSS Archive
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Preserved
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2026-02-09
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1, 5 to 36
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LOCKSS Archive
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Preserved
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2026-02-09
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1, 5 to 53
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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, 1, 5 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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54
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 1(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 5(1-2), 1976: 6(1-3), 1977: 7(1-3), 1978/1979: 8(1-2), 1979: 9(1-3), 1980: 10(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(4), 1982/1983: 12(1-2), 1983: 13(2-3), 1984: 14(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 15(1-2), 1986: 16(1-3), 1987/1988: 17(1-2), 1988: 18(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989/1990: 19(1-2), 1990/1991: 20(1-2), 1991: 21(1-2), 1992/1993: 22(1-2), 1993/1994: 23(1-2), 1994/1995: 24(1-2), 1995/1996: 25(1-2), 1996/1997: 26(1-2), 1997/1998: 27(1-2), 1998/1999: 28(1-2), 1999/2000: 29(1-2), 2000/2001: 30(1-2), 2001/2002: 31(1-2), 2002/2003: 32(1-2), 2003/2004: 33(1-2), 2004: 34(1-2), 2005/2006: 35(1-2), 2007: 36(1-2), 2008: 37(1-2), 2009: 38(1-3), 2010: 39(1-3), 2011: 40(1-3), 2012: 41(1-3), 2013: 42(1-4), 2014: 43(1-3), 2015: 44(1-3), 2016: 45(1-4), 2017: 46(1-4), 2018: 47(1-4), 2019: 48(1-4), 2020: 49(1-4), 2021: 50(1-4), 2022: 51(1-4), 2023: 52(1-4), 2024: 53(1-4), 2025: 54(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 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 : 1979: 8(2), 1979: 9(1, 3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1982/1983: 12(1-2), 1983: 13(2-3), 1984: 14(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 15(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 19(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993/1994: 23(1-2), 1994/1995: 24(1-2), 1995/1996: 25(1-2), 1996/1997: 26(1-2), 1997/1998: 27(1-2), 1998/1999: 28(1-2), 1999/2000: 29(1-2), 2000/2001: 30(1-2), 2001/2002: 31(1-2), 2002/2003: 32(1-2), 2003/2004: 33(1-2), 2004: 34(1-2)
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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 : 3 (1, 2); 4 (1 to 3); 26 (2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1); 35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1 to 3)
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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, 2); 4 (1 to 3); 26 (2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1); 35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1 to 3)
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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, 2); 4 (1 to 3); 5 (1 to 4); 26 (2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1-2); 35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2-3); 39 (1 to 3); 41 (1, 2-3); 42 (1, 2-3, 4); 43 (1 to 3); 44 (1 to 3); 45 (1, 2-3, 4); 46 (1 to 4); 47 (1, 2, 3-4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (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 : 26; 27 (1, 2); 28 (1, 2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1-2); 35 (2); 37 (1, 2); 38 (1, 2-3); 39 (1-3); 40 (1-3)
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Library of Congress
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Preserved
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2025-04-07
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39 (1 to 3); 40 (1 to 3); 41 (1, 2-3); 42 (1, 2-3, 4); 43 (1 to 3); 44 (1 to 3); 45 (1, 2-3, 4); 46 (1 to 4); 47 (1 to 3-4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 3)
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