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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 (, 1-2, 3, 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1, 2-3, 4); 6 (, 1 to 3); 7 (, 1 to 3); 8 (, 1, 2-3); 9 (, 1 to 3); 10 (, 1 to 3); 11 (, 1 to 3); 12 (, 1 to 3); 13 (, 1 to 3); 14 (, 1 to 3); 15 (, 1 to 3); 16 (, 1, 2-3); 17 (, 1, 2-3); 18 (, 1, 2-3); 19 (, 1 to 3); 20 (, 1 to 3); 21 (, 1-2, 3); 22 (, 1-2, 3); 23 (, 1-2, 3); 24 (, 1 to 3); 25 (, 1, 2-3); 26 (, 1 to 3); 27 (, 1 to 3); 28 (, 1, 2-3); 29 (, 1, 2-3); 30 (, 1-2, 3); 31 (, 1-3); 32 (, 1-2, 3); 33 (, 1-3); 34 (, 1 to 3); 35 (, 1 to 3); 36 (, 1-2, 3); 37 (, 1 to 3); 38 (, 1 to 3); 39 (, 1-3); 40 (, 1 to 3); 41 (, 1 to 3); 42 (, 1-3); 43 (, 1 to 3); 44 (, 1-3); 45 (, 1-2, 3); 46 (, 1 to 3); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 4, 5-6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1-2, 3, 4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1); 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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Internet Archive
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Preserved
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2025-08-08
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3 to 37
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 61
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Portico
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Preserved
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2026-02-12
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Preserved : 1989/1990: 1(1-4), 1990: 2(1-4), 1991: 3(1-4), 1992: 4(1-4), 1993: 5(1-4), 1994: 6(1-3), 1994: 7(1-3), 1995: 8(1-3), 1995: 9(1-3), 1996: 10(1-3), 1996: 11(1-3), 1997: 12(1-3), 1997: 13(1-3), 1998: 14(1-3), 1998: 15(1-3), 1999: 16(1-3), 1999: 17(1-3), 2000: 18(1-3), 2000: 19(1-3), 2001: 20(1-3), 2001: 21(1-3), 2002: 22(1-3), 2002: 23(1-3), 2003: 24(1-3), 2003: 25(1-3), 2004: 26(1-3), 2004: 27(1-3), 2004: 28(1-3), 2005: 29(1-3), 2005: 30(1-3), 2005: 31(1-3), 2006: 32(1-3), 2006: 33(1-3), 2006: 34(1-3), 2007: 35(1-3), 2007: 36(1-3), 2007: 37(1-3), 2008: 38(1-3), 2008: 39(1-3), 2008: 40(1-3), 2009: 41(1-3), 2009: 42(1-3), 2009: 43(1-3), 2010: 44(1-3), 2010: 45(1-3), 2010: 46(1-3), 2011: 47(1-6), 2012: 48(1-5), 2013: 49(1-6), 2014: 50(1-6), 2015: 51(2-6), 2016: 52(1-6), 2017: 53(1-6), 2018: 54(1-4), 2019: 55(1-4), 2019/2020: 56(1-4), 2021: 57(1-4), 2022: 58(1-4), 2023: 59(1-4), 2024: 60(1-4), 2025: 61(1-4)
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LOCKSS Archive
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In Progress
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2026-02-09
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48, 55
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LOCKSS Archive
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Preserved
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2026-02-09
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49 to 54
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Library of Congress
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Preserved
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2025-04-07
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54 (2 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1-2, 3, 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 3)
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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 : 2 (1 to 3); 3 (1, 3); 4 (1 to 3); 5 (1 to 5); 6 (1 to 4); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1 to 3); 21 (1, 3); 22 (1, 3); 23 (1, 3); 24 (1 to 3); 25 (1, 2); 26 (1 to 3); 27 (1 to 3); 28 (1, 2); 29 (1, 2); 31 (1); 32 (3); 33 (1); 34 (2, 3); 35 (1 to 3); 36 (1, 3); 37 (1 to 3); 38 (1 to 3); 39 (1); 41 (2, 3); 42 (1); 43 (2, 3); 44 (1); 45 (3); 46 (1 to 3); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1-2, 3, 4); 58 (1 to 4); 59 (1 to 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 : 2 (1 to 3); 3 (1, 3); 4 (1 to 3); 5 (1 to 5); 6 (1 to 4); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1 to 3); 21 (1, 3); 22 (1, 3); 23 (1, 3); 24 (1 to 3); 25 (1, 2); 26 (1 to 3); 27 (1 to 3); 28 (1, 2); 29 (1, 2); 31 (1); 32 (3); 33 (1); 34 (2, 3); 35 (1 to 3); 36 (1, 3); 37 (1 to 3); 38 (1 to 3); 39 (1); 41 (2, 3); 42 (1); 43 (2, 3); 44 (1); 45 (3); 46 (1 to 3); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1-2, 3, 4); 58 (1 to 4); 59 (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 : 12 (1-3); 13 (1-3); 14 (1-3); 15 (1-3); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1-3); 20 (1-3); 21 (1, 3); 22 (1, 3); 23 (1, 3); 24 (1-3); 25 (1, 2); 26 (1-3); 27 (1-3); 28 (1, 2); 29 (1, 2-3); 30 (1-2, 3); 31 (1-3); 32 (3); 33 (1-3); 34 (2, 3); 35 (2, 3); 36 (1-2, 3); 37 (1, 2); 38 (3); 39 (1-3); 40 (2, 3); 41; 42 (1-3); 43 (2, 3); 44 (1-3); 45 (3); 46 (1-3); 47 (1, 2, 4-6); 48 (1-6); 49 (1, 2, 4-6); 50 (1-4, 5-6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (1-4); 55 (1-4)
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