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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 20 (4); 1999
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Internet Archive
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Preserved
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2025-08-08
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1 to 14
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 89
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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 20, 22, 24, 27, 29, 31, 33, 35, 37, 38, 40, 42 to 48, 50 to 90
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 20, 22, 24, 27, 29, 31, 33, 35, 37, 38, 40, 42, 43, 89, 90
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 1(1-6), 1982: 2(1-6), 1983: 3(1-6), 1984: 4(1-6), 1985: 5(1-6), 1986: 6(1-6), 1987: 7(1-6), 1988: 8(1-6), 1989: 9(1-6), 1990: 10(1-6), 1991: 11(1-2, 5-6), 1992: 12(1-6), 1993: 13(1-6), 1994: 14(1-6), 1995: 15(1-3, 5-6), 1996: 16(1-6), 1997: 17(1-6), 1998: 18(1-4), 1998: 19(1-4), 1999: 20(1-4), 1999: 21(1-4), 2000: 22(1-4), 2000: 23(1-4), 2001: 24(1-4), 2001: 25(1-4), 2002: 26(1-4), 2002: 27(1-4), 2003: 28(1-4), 2003: 29(1-4), 2004: 30(1-4), 2004: 31(1-4), 2005: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2006: 35(1-4), 2007: 36(1-4), 2007: 37(1-4), 2008: 38(1-4), 2008: 39(1-4), 2008: 40(1-4), 2009: 41(1-4), 2009: 42(1-4), 2009: 43(1-4), 2010: 44(1-4), 2010: 45(1-4), 2010: 46(1-4), 2011: 47(1-4), 2011: 48(1-4), 2011: 49(1-4), 2012: 50(1-4), 2012: 51(1-4), 2012: 52(1-4), 2013: 53(1-4), 2013: 54(1-4), 2013: 55(1-4), 2014: 56(1-4), 2014: 57(1-4), 2014: 58(1-4), 2015: 59(1-4), 2015: 60(1-4), 2015/2016: 61(1-4), 2016: 62(1-4), 2016: 63(1-4), 2016: 64(1-4), 2017: 65(1-4), 2017: 66(1-4), 2017: 67(1-4), 2018: 68(1-4), 2018: 69(1-4), 2018: 70(1-4), 2019: 71(1-4), 2019: 72(1-4), 2019: 73(1-4), 2020: 74(1-4), 2020: 75(1-4), 2020: 76(1-4), 2021: 77(1-4), 2021: 78(1-4), 2021: 79(1-4), 2022: 80(1-4), 2022: 81(1-4), 2022: 82(1-4), 2023: 83(1-4), 2023: 84(1-4), 2023: 85(1-4), 2024: 86(1-4), 2024: 87(1-4), 2023/2024: 88(1, S 1, 2-4), 2025: 89(1-4), 2025: 90(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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44 to 48, 50 to 88
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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 : 1 (1 to 4 to 6); 2 (1 to 4, 5-6); 3 (1, 2 to 4 to 6); 4 (1 to 6); 5 (1-2, 2 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1, 2 to 4 to 6); 9 (1 to 6); 11 (1-2, 5, 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 3, 5, 6); 16 (1 to 6); 17 (1 to 6); 18 (1, 2,3, 4); 19 (1 to 4); 21 (1, 2, 3,4); 22 (1 to 4); 23 (1, 2,3,4); 24 (1 to 4); 25 (1, 2, 3,4); 26 (1 to 4); 27 (1, 2, 3,4); 28 (1 to 4); 29 (1, 2, 3,4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1-2, 3, 4); 35 (1,2, 3, 4); 36 (1 to 4); 37 (1-2, 3, 4); 38 (1 to 4); 39 (1–4); 41 (2 to 4); 42 (1 to 4); 43 (1-2, 3, 4); 44 (1 to 4); 45 (1, 2-4); 46 (1, 2-3, 4); 47 (1 to 4); 48 (1-3, 4); 49 (1-4); 51 (2 to 4); 52 (1, 2-4); 53 (1-2, 3, 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1, 2, 3-4); 68 (1, 2-3, 4); 69 (1-2, 3, 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (1 to 4); 81 (1 to 4); 82 (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 : 11 (5, 6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-3, 5, 6); 16 (1-6); 17 (1-6); 18 (1, 2-3, 4); 19 (1-4); 20 (1-4); 21 (1, 2, 3-4); 22 (1-4); 23 (1, 2-4); 24 (1-4); 25 (1, 2, 3-4); 26 (1-4); 27 (1, 2, 3-4); 28 (1-4); 29 (1, 2, 3-4); 30 (1, 2, 3-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-2, 3, 4); 35 (1-2, 3, 4); 36 (1-4); 37 (1-2, 3, 4); 38 (1-4); 39 (1-4); 40 (2-4); 41 (1-4); 42 (1-4); 43 (1-2, 3, 4); 44 (1-4); 45 (1, 2-4); 46 (1, 4); 47 (1, 3, 4); 48; 50 (3); 51 (1-4); 52 (1, 2-4); 53 (1-2, 3, 4); 54 (1-4); 55 (1-3); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (1-4); 65 (1-4); 66 (1-4); 67 (1, 2, 3-4); 68 (1, 2-3, 4); 69 (1-2, 3, 4); 70 (1-4); 71 (1-4); 72 (1-4); 509 (3-4)
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