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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, 2-3, 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1-2, 3, 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1, 2, 3-4); 11 (, 1, 2, 3-4); 12 (, 1 to 4); 13 (, 1, 2-3, 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1, 3); 18 (, 1 to 3); 19 (, 1, 2-3); 20 (, 1 to 3); 21 (, 1, 2-3); 22 (, 1, 2); 23 (, 1, 2-3); 24 (, 1 to 3); 25 (, 1 to 3); 26 (, 1); 27 (, 1, 2); 28 (, 1 to 3); 29 (, 1); 30 (, 1 to 3); 31 (, 1 to 3); 32 (, 1-3); 33 (, 1 to 3); 34 (, 1 to 3); 35 (, 1, 3); 36 (, 1); 37 (, 1 to 3); 38 (, 1); 39 (, 1); 40 (, 1 to 3); 41 (, 1 to 3); 42 (, 1-3); 43 (, 1); 44 (, 1); 45 (, 1, 2); 46 (, 1-3); 47 (, 1); 48 (, 1); 49 (, 1); 50 (, 1, 2-3); 51 (, 1, 2); 52 (, 1, 3); 53 (, 1); 54 (, 1); 55 (, 1); 56 (, 1, 2); 57 (, 1); 58 (, 1, 2); 59 (, 1); 60 (, 1, 2); 61 (, 1-2, 3); 62 (, 1 to 3); 63 (, 1); 64 (, 1 to 4, 5-6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1, 2-3, 4-5, 6); 68 (, 1 to 6); 69 (, 1 to 6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1); 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 : 1982: 1(1-4), 1983/1984: 2(1-4), 1984: 3(1-4), 1985: 4(1, S 1, 2-4), 1986: 5(1-4), 1987: 6(1-4), 1988: 7(1-4), 1989: 8(1-4), 1990: 9(1-4), 1991: 10(1-4), 1992: 11(1-4), 1993: 12(1-4), 1994: 13(1-4), 1995: 14(1-4), 1996: 15(1-4), 1997: 16(1-4), 1998: 17(1-3), 1998: 18(1-3), 1999: 19(1-3), 1999: 20(1-3), 2000: 21(1-3), 2000: 22(1-3), 2001: 23(1-3), 2001: 24(1-3), 2002: 25(1-3), 2002: 26(1-3), 2003: 27(1-3), 2003: 28(1-3), 2004: 29(1-3), 2004: 30(1-3), 2005: 31(1-3), 2005: 32(1-3), 2005: 33(1-3), 2006: 34(1-3), 2006: 35(1-3), 2006: 36(1-3), 2007: 37(1-3), 2007: 38(1-3), 2007: 39(1-3), 2008: 40(1-3), 2008: 41(1-3), 2008: 42(1-3), 2009: 43(1-3), 2009: 44(1-3), 2009: 45(1-3), 2010: 46(1-3), 2010: 47(1-3), 2010: 48(1-3), 2011: 49(1-3), 2011: 50(1-3), 2011: 51(1-3), 2012: 52(1-3), 2012: 53(1-3), 2012: 54(1-3), 2013: 55(1-3), 2013: 56(1-3), 2013: 57(1-3), 2014: 58(1-3), 2014: 59(1-3), 2014: 60(1-3), 2015: 61(1-3), 2015: 62(1-3), 2015: 63(1-3), 2016: 64(1-6), 2017: 65(1-6), 2018: 66(1-6), 2019/2020: 67(1-6), 2020: 68(1-6), 2021: 69(1-6), 2022: 70(1-6), 2023: 71(1-6), 2024: 72(1-4)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 74
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LOCKSS Archive
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In Progress
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2026-02-09
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52 to 54, 67
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LOCKSS Archive
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Preserved
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2026-02-09
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55 to 66
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Portico
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Preserved
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2026-02-12
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Preserved : 2025: 73(1), 2026: 74(1)
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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 : 5 (1, 2-3); 6 (1, 2); 7 (1 to 6); 49 (1-3); 51 (2-3); 52 (1, 3); 53 (1); 54; 55; 56 (2); 57 (1-3); 58 (2); 59 (1); 61 (3); 62 (1 to 3); 63 (1); 64 (2 to 5); 65 (1 to 6); 66 (1 to 6); 67 (1, 2-3, 4-5, 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6)
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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 : 5 (1, 2-3); 6 (1, 2); 7 (1 to 6); 49 (1-3); 51 (2-3); 52 (1, 3); 53 (1); 54; 55; 56 (2); 57 (1-3); 58 (2); 59 (1); 61 (3); 62 (1 to 3); 63 (1); 64 (2 to 5); 65 (1 to 6); 66 (1 to 6); 67 (1, 2-3, 4-5, 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6)
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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 (2); 58 (1, 2); 59 (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 : 6 (2); 58 (1, 2); 59 (1)
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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 : 21 (1); 22 (2-3); 23 (1, 2-3); 24 (1, 2); 25 (1-3); 26 (1-3); 27 (2-3); 29 (1-3); 30 (2, 3); 31 (1, 2); 32 (1-3); 33 (2, 3); 34 (1-3); 35 (1-2, 3); 36 (1-3); 37 (2); 38 (1-3); 39; 40 (2); 41 (1-3); 42 (1-3); 43; 44; 45 (2-3); 46 (1-3); 47; 48; 49; 50 (2-3); 51 (1, 2-3); 52 (1-2, 3); 53 (1-3); 54; 55; 56 (2-3); 57 (1-3); 58 (2-3); 59 (1-3); 60 (2-3); 61 (1-2, 3); 62 (1-3); 63 (1-3); 64 (2-4, 5-6); 65 (1-6); 66 (1-6); 67 (1, 2-3)
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