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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, 3, 4); 2 (, 1 to 4); 3 (, 1-2, 3, 4); 4 (, 1-2, 3-4); 5 (, 1, 2-4); 6 (, 1, 2-3, 4); 7 (, 1, 2, 3-4); 8 (, 1, 2-3); 9 (, 1-3); 10 (, 1, 2-3); 11 (, 1-3); 12 (, 1 to 3); 13 (, 1 to 3); 14 (, 1, 3); 15 (, 1 to 3); 16 (, 1 to 3); 17 (, 1-3); 18 (, 1 to 3); 19 (, 1 to 3); 20 (, 1, 2-3); 21 (, 1-2, 3); 22 (, 1-3); 23 (, 1, 2-3); 24 (, 1-3); 25 (, 1 to 3); 26 (, 1, 2-3); 27 (, 1 to 3); 28 (, 1 to 3); 29 (, 1 to 3); 30 (, 1 to 3); 31 (, 1-3); 32 (, 1 to 3); 33 (, 1 to 3); 34 (, 1 to 3); 35 (, 1 to 3); 36 (, 1 to 3); 37 (, 1, 2-3); 38 (, 1 to 3); 39 (, 1 to 3); 40 (, 1 to 3); 41 (, 1, 2-3); 42 (, 1 to 3); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 3); 46 (, 1 to 3); 47 (, 1 to 3); 48 (, 1 to 3); 49 (, 1 to 3); 50 (, 1 to 3); 51 (, 1 to 3); 52 (, 1 to 3); 53 (, 1 to 10); 54 (, 1 to 10); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 7); 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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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 63
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 1(1-4), 1988: 2(1-4), 1989: 3(1-4), 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-4), 1993: 7(1-4), 1994: 8(1-3), 1994: 9(1-3), 1995: 10(1-3), 1995: 11(1-3), 1996: 12(1-3), 1996: 13(1-3), 1997: 14(1-3), 1997: 15(1-3), 1998: 16(1-3), 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), 2006: 33(1-3), 2006: 34(1-3), 2007: 35(1-3), 2007: 36(1-3), 2008: 37(1-3), 2008: 38(1-3), 2009: 39(1-3), 2009: 40(1-3), 2010: 41(1-3), 2010: 42(1-3), 2011: 43(1-3), 2011: 44(1-3), 2012: 45(1-3), 2012: 46(1, 3), 2013: 47(1-3), 2013: 48(1-3), 2014: 49(1-3), 2014: 50(1, 3), 2015: 51(2-3), 2015: 52(1-3), 2016: 53(1-10), 2017: 54(1-10), 2018: 55(1-12), 2019: 56(1-12), 2019/2020: 57(1-12), 2021: 58(1-12), 2022: 59(1-12), 2023: 60(1-12), 2024: 61(1-11), 2025: 62(1, 3-4, 7-9, 11), 2026: 63(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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45, 46
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LOCKSS Archive
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Preserved
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2026-02-09
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47 to 56
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Library of Congress
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Preserved
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2025-04-07
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53 (6); 54 (4, 5, 8 to 10); 55 (1 to 12); 56 (1 to 12); 57 (1 to 12); 58 (1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 11); 62 (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 to 3); 6 (1 to 9, 11, 12); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (Suppl 1, 1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 9); 54 (1 to 9); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12)
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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 to 3); 6 (1 to 9, 11, 12); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (Suppl 1, 1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 9); 54 (1 to 9); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12)
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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 (1-2, 3); 22 (1-3); 23 (2-3); 24 (1-3); 25 (2, 3); 26 (1, 2-3); 27 (1-3); 28 (1-3); 29 (1-3); 30 (1-3); 31 (1-3); 32 (2, 3); 35 (1-3); 36 (1-3); 37 (1, 2-3); 38 (1-3); 39 (1-3); 40 (1-3); 41 (1, 2-3); 42 (1-3); 43 (1-3); 44 (1-3); 45 (1-3); 46 (supplement-1, 1-3); 47 (1-3); 48 (1, 3); 49 (1-3); 50 (1-3); 51 (1-3); 52 (1-3); 53 (1-10); 54 (1-10); 55 (1-12); 56 (1-6, 8-12)
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