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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 6); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 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 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 4); 20 (1 to 4); 21 (1, 2/3, 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 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 40 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1/2, 3); 46 (1 to 3); 47 (1, 2/3); 48 (1, 2/3); 49 (1 to 3); 50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1 to 3); 59 (1 to 3); 60 (1 to 3); 61 (1 to 4); 62 (1-2, 3, 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (3); 68 (2 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1, 2-3, 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1, 3, 4); 78 (1 to 4); 79 (1 to 4); 80 (1 to 4); 81 (1-2)
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Internet Archive
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Preserved
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2025-08-08
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1
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 81
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Portico
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Preserved
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2026-04-09
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Preserved : 1991: 1(1-4), 1992: 2(1-4), 1993: 3(1-4), 1994: 4(1-6), 1995: 5(1-3), 1995: 6(1-3), 1996: 7(1-3), 1996: 8(1-3), 1997: 9(1-3), 1997: 10(1-3), 1998: 11(1-3), 1998: 12(1-3), 1999: 13(1-3), 1999: 14(1-3), 2000: 15(1-3), 2000: 16(1-3), 2001: 17(1-3), 2001: 18(1-3), 2002: 19(1-4), 2002: 20(1-4), 2003: 21(1-4), 2003: 22(1-4), 2003/2004: 23(1-4), 2004: 24(1-4), 2005: 25(1-4), 2005: 26(1-4), 2006: 27(1-3), 2006: 28(1-3), 2006: 29(1-3), 2007: 30(1-3), 2007: 31(1-3), 2007: 32(1-3), 2007: 33(1-3), 2008: 34(1-3), 2008: 35(1-3), 2008: 36(1-3), 2008: 37(1-3), 2009: 38(1-3), 2009: 39(1-3), 2009: 40(1-3), 2009: 41(1-3), 2010: 42(1-3), 2010: 43(1-3), 2010: 44(1-3), 2010: 45(1-3), 2011: 46(1-3), 2011: 47(1-3), 2011: 48(1-3), 2012: 49(1-3), 2012: 50(1-3), 2012: 51(1), 2013: 52(1-3), 2013: 53(1-3), 2013: 54(1-3), 2014: 55(1-3), 2014: 56(1-3), 2014: 57(1, 3), 2015: 58(3), 2015: 59(1-3), 2015: 60(1-3), 2016: 61(1-4), 2016: 62(1-4), 2017: 63(1-4), 2017: 64(1-4), 2018: 65(1-4), 2018: 66(1-4), 2019: 67(1-4), 2019: 68(1-4), 2018/2019: 69(1-4), 2018/2019/2020: 70(1-4), 2021: 71(1-4), 2021: 72(1-4), 2022: 73(1-4), 2022: 74(1-4), 2023: 75(2-4), 2023: 76(1-4), 2024: 77(1-4), 2024: 78(1-4), 2025: 79(1-4), 2025: 80(1-4), 2026: 81(1-2)
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LOCKSS Archive
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In Progress
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2026-04-06
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49 to 51, 67, 68
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LOCKSS Archive
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Preserved
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2026-04-06
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52 to 66
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Library of Congress
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Preserved
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2025-04-07
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65 (2 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1, 2-3, 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1-2, 3, 4); 78 (1, 2)
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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 : 1 (1 to 3); 2 (1 to 4); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 4); 9 (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 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 4); 21 (1, 2, 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 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1, 3); 46 (1 to 3); 47 (1, 2); 48 (1, 2); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1 to 3); 59 (1 to 3); 61 (1 to 4); 62 (1, 3, 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1, 2-3, 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1, 3, 4); 78 (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 : 1 (1 to 3); 2 (1 to 4); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 4); 9 (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 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 4); 21 (1, 2, 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 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1, 3); 46 (1 to 3); 47 (1, 2); 48 (1, 2); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1 to 3); 59 (1 to 3); 61 (1 to 4); 62 (1, 3, 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1, 2-3, 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1, 3, 4); 78 (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 : 9 (2); 10 (1-3); 11 (1-3); 12 (1-3); 13 (1-3); 14 (1-3); 15 (1-3); 16 (1-3); 17 (1-3); 18 (1-3); 19 (1-4); 20 (1-4); 21 (1, 2-3, 4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-3); 28 (1-3); 29 (1-3); 30 (1-3); 31 (1, 2); 32 (1-3); 33 (1-3); 34 (1-3); 35 (1-3); 36 (1-3); 37 (1-3); 38 (1-3); 39 (1-3); 40 (1-3); 41 (1-3); 42 (1-3); 43 (1-3); 44 (1-3); 45 (1-2, 3); 46 (1-3); 47 (1, 2-3); 48 (1, 2-3); 49 (1-3); 50 (1-3); 51 (1-3); 52 (1-3); 53 (1-3); 54 (1, 3); 55 (1-3); 56 (1-3); 57 (1-3); 58 (1-3); 59 (1-3); 60 (1-3); 61 (1-4); 62 (1-2, 3, 4); 63 (1-4); 64 (1-4); 65 (1-4); 66 (1-4); 67 (1-4); 68 (1-4)
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