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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 6); 2 (, 1 to 6); 3 (, 1 to 6); 4 (, 1 to 6); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 3); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 3); 28 (, 1 to 3); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 3); 32 (, 1 to 3); 36 (, 2); 37 (, 3, 4); 38 (, 1 to 4); 39 (, 1 to 3); 40 (, 1 to 3); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 8); 54 (, 1 to 8); 55 (, 1 to 16); 56 (, 1 to 16); 57 (, 1 to 8, 10 to 16); 58 (, 1 to 16); 59 (, 1 to 12); 60 (, 1, 2, 7 to 12); 61 (, 1 to 12); 62 (, 1 to 12); 63 (, 1 to 12); 64 (, 1 to 12); 65 (, 1 to 12); 66 (, 1 to 12); 67 (, 1 to 12); 68 (, 1 to 12); 69 (, 1 to 12); 70 (, 1 to 12); 71 (, 1 to 12); 72 (, 1 to 12); 73 (, 1 to 8); 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 : 1988: 1(1-6), 1989: 2(1-6), 1990: 3(1-6), 1991: 4(1-6), 1992: 5(1-4), 1992: 6(1-4), 1993: 7(1-4), 1993: 8(1-4), 1993: 9(1-4), 1994: 10(1-4), 1994: 11(1-4), 1994: 12(1-4), 1995: 13(1-4), 1995: 14(1-4), 1995: 15(1-4), 1996: 16(1-4), 1996: 17(1-4), 1996: 18(1-4), 1997: 19(1-4), 1997: 20(1-4), 1997: 21(1-4), 1998: 22(1-4), 1998: 23(1-4), 1998: 24(1-4), 1999: 25(1-4), 1999: 26(1-4), 1999: 27(1-3), 1999: 28(1-3), 2000: 29(1-4), 2000: 30(1-4), 2000: 31(1-3), 2000: 32(1-3), 2001: 33(1-4), 2001: 34(1-4), 2001: 35(1-3), 2001: 36(1-3), 2002: 37(1-4), 2002: 38(1, S 1, 2-4), 2002: 39(1-3), 2002: 40(1-3), 2003: 41(1-4), 2003: 42(1-4), 2003: 43(1-2, S 2, 3), 2003: 44(1-3), 2004: 45(1-4), 2004: 46(1-4), 2004: 47(1-4), 2004: 48(1-4), 2005: 49(1-4), 2005: 50(1-4), 2005: 51(1-4), 2005: 52(1-4), 2006: 53(1-8), 2006: 54(1-8), 2007: 55(1-16), 2008: 56(1-16), 2009: 57(1-13, S 13, 14-16), 2010: 58(1-16), 2011: 59(1-12), 2012: 60(1-12), 2013: 61(1, S1, 2-12), 2014: 62(1-12), 2015: 63(1, S1, 2-12), 2016: 64(1-12), 2017: 65(1, S 1, 2-12), 2018: 66(1-12), 2019: 67(1, S1, 2-12), 2020: 68(1-12), 2021: 69(1, S1, 2-12), 2022: 70(1-12), 2023: 71(1, S1, 2-12), 2024: 72(1-12), 2025: 73(1, S1, 2-12), 2026: 74(1-3)
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CLOCKSS Archive
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Preserved
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2026-02-09
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4 to 74
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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 4); 3 (1 to 4); 4 (1 to 3); 5 (1 to 4); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 3); 28 (1 to 3); 29 (1 to 4); 31 (1 to 3); 32 (1 to 3); 33 (1 to 4); 34 (1 to 4); 35 (1 to 3); 36 (1 to 3); 37 (1 to 4); 38 (S1, 1 to 4); 39 (1 to 3); 41 (1 to 4); 42 (1 to 4); 43 (S2, 1 to 3); 44 (1 to 3); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 8); 54 (1 to 8); 55 (1 to 9, 11 to 16); 56 (1 to 9, 11 to 16); 57 (S13, 1 to 9, 11 to 16); 58 (1 to 9, 11 to 16); 59 (S1, 1 to 9, 11, 12); 61 (, 1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (, 1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (S1, 1 to 9, 11, 12); 66 (1 to 9, 11, 12); 67 (S1, 1 to 4, 6 to 9, 11, 12); 68 (1 to 9, 11, 12); 69 (S1, 1 to 9, 11, 12); 71 (S1, 1 to 9, 11, 12); 72 (1 to 9, 11, 12); 73 (S1, 1 to 9, 11)
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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 4); 3 (1 to 4); 4 (1 to 3); 5 (1 to 4); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 3); 28 (1 to 3); 29 (1 to 4); 31 (1 to 3); 32 (1 to 3); 33 (1 to 4); 34 (1 to 4); 35 (1 to 3); 36 (1 to 3); 37 (1 to 4); 38 (S1, 1 to 4); 39 (1 to 3); 41 (1 to 4); 42 (1 to 4); 43 (S2, 1 to 3); 44 (1 to 3); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 8); 54 (1 to 8); 55 (1 to 9, 11 to 16); 56 (1 to 9, 11 to 16); 57 (S13, 1 to 9, 11 to 16); 58 (1 to 9, 11 to 16); 59 (S1, 1 to 9, 11, 12); 61 (, 1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (, 1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (S1, 1 to 9, 11, 12); 66 (1 to 9, 11, 12); 67 (S1, 1 to 4, 6 to 9, 11, 12); 68 (1 to 9, 11, 12); 69 (S1, 1 to 9, 11, 12); 71 (S1, 1 to 9, 11, 12); 72 (1 to 9, 11, 12); 73 (S1, 1 to 9, 11, 12)
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