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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 6); 4 (, 1 to 6); 5 (, 1, 2-3, 4 to 6); 6 (, 1 to 4, 5-6); 7 (, 1 to 4, 5-6); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1, 2, 3-4, 5, 6); 11 (, 1, 2-3, 4, 5-6); 12 (, 1-2, 3 to 6); 13 (, 1-2, 3 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1-2, 3 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1-2, 3 to 6); 21 (, 1 to 3, 4-5, 6); 22 (, 1 to 6); 23 (, 1 to 4, 5-6); 24 (, 1 to 6); 25 (, 1, 2-3, 4 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1, 2, 3-4, 5, 6); 29 (, 1 to 3, 4-5, 6); 30 (, 1 to 4, 5-6); 31 (, 1-2, 3-4, 5, 6); 32 (, 1-2, 3, 4-6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 3, 4-5, 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1, 2-3, 4 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); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1-2, 3 to 6); 62 (, 1 to 6); 63 (, 4); 64 (, 2 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 6); 69 (, 1 to 6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1); 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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Internet Archive
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Preserved
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2025-08-08
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1 to 12
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 27, 29 to 76
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Portico
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Preserved
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2026-02-12
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Preserved : 1986: 1(1-4), 1987: 2(1-4), 1988: 3(1-6), 1988/1989: 4(1-6), 1989/1990: 5(1-6), 1990: 6(1-6), 1990/1991: 7(1-6), 1991: 8(1-6), 1991/1992: 9(1-6), 1992: 10(1-6), 1993: 11(1-6), 1993: 12(1-6), 1993/1994: 13(1-6), 1994: 14(1-6), 1994/1995: 15(1-6), 1995: 16(1-6), 1995/1996: 17(1-6), 1996: 18(1-6), 1996/1997: 19(1-6), 1997: 20(1-6), 1998: 21(1-6), 1998/1999: 22(1-6), 1999: 23(1-6), 1999/2000: 24(1-6), 2000: 25(1-6), 2000: 26(1-6), 2001: 27(1-6), 2002: 28(1-6), 2002: 29(1-6), 2002/2003: 30(1-6), 2003: 31(1-6), 2003: 32(1-6), 2003/2004: 33(1-6), 2004: 34(1-6), 2004/2005: 35(1-6), 2005: 36(1-6), 2005/2006: 37(1-6), 2006: 38(1-6), 2006/2007: 39(1-6), 2007: 40(1-6), 2007/2008: 41(1-6), 2008: 42(1-6), 2008/2009: 43(1-6), 2009: 44(1-6), 2009/2010: 45(1-6), 2010: 46(1-6), 2011: 47(1-6), 2011: 48(1-6), 2012: 49(1-6), 2012: 50(1-2, 6), 2013: 51(1-4, 6), 2013: 52(1-4, 6), 2014: 53(1-6), 2014: 54(1-4, 6), 2015: 55(4-6), 2015: 56(1-6), 2016: 57(1-6), 2016: 58(1-6), 2017: 59(1-6), 2017: 60(1-6), 2018: 61(1-6), 2018: 62(1-6), 2018/2019: 63(1-6), 2019: 64(1-6), 2019/2020: 65(1-6), 2020: 66(1-6), 2021: 67(1-6), 2021: 68(1-6), 2022: 69(1-6), 2022: 70(1-6), 2023: 71(1-6), 2023: 72(1-6), 2024: 73(1-6), 2024: 74(1-5), 2025: 75(1-3, 5-6), 2025: 76(1-6)
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LOCKSS Archive
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In Progress
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2026-02-09
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49, 50, 63
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LOCKSS Archive
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Preserved
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2026-02-09
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51 to 62
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Library of Congress
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Preserved
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2025-04-07
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57 (3); 61 (1-2, 3 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 3, 5, 6); 69 (1 to 6); 70 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 5)
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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, 3 to 6); 3 (1 to 5); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 19 (3 to 6); 21 (1 to 4, 6); 22 (1 to 6); 23 (1 to 5); 24 (1 to 6); 25 (1, 2, 4 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 3, 5, 6); 29 (1 to 4, 6); 31 (1, 3, 5, 6); 32 (1, 3, 4); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 4, 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 2, 4 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 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1-2, 3 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (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 : 2 (1, 3 to 6); 3 (1 to 5); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 19 (3 to 6); 21 (1 to 4, 6); 22 (1 to 6); 23 (1 to 5); 24 (1 to 6); 25 (1, 2, 4 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 3, 5, 6); 29 (1 to 4, 6); 31 (1, 3, 5, 6); 32 (1, 3, 4); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 4, 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 2, 4 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 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1-2, 3 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6)
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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 : 20 (1-2); 29 (4-5, 6); 30 (1-4, 5-6); 31 (1-2, 3-4); 33 (4-6); 34 (1-5); 35 (1, 3, 4, 6); 36 (1-6); 37 (1-6); 38 (1, 3, 4-5, 6); 39 (1-6); 40 (1, 3-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1, 2-3, 5, 6); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (1-6); 55 (1-6); 56 (1-6); 57 (1-6); 58 (1-6); 59 (1-6); 60 (1-6); 61 (1-2, 3-5); 62 (1-6); 63 (1-6); 64 (1-5)
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