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Internet Archive
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Preserved
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2025-08-08
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3 to 50
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1 to 6); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 9); 6 (1 to 9); 7 (1 to 9); 8 (1 to 9); 9 (1 to 9); 10 (S8, 1 to 9); 11 (1 to 12); 12 (1 to 12); 13 (S1, 1 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (S13, 1 to 12); 19 (S4, 1 to 12); 20 (S5, 1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (S9, 1 to 12); 24 (S10, 1 to 12); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (S12, 1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 5); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 2, 5, 6); 46 (1 to 6); 47 (1 to 6); 48 (S1, 1 to 6); 49 (1 to 6); 50 (S1, 1 to 6); 51 (1 to 6); 52 (S3, 1 to 6); 53 (1 to 6); 54 (S1, 1 to 6); 55 (1 to 6); 56 (S1, 1 to 6); 57 (1 to 6); 58 (S1, 1 to 6); 59 (1 to 6); 60 (S1, 1 to 6); 61 (1 to 6); 62 (S1, 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); 70 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (S1, 1 to 4); 999 (S11)
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Portico
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Preserved
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2026-04-23
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Preserved : 1978: 1(1-6), 1979: 2(1-6), 1980: 3(1-6), 1981: 4(1-6), 1982: 5(1-9), 1983: 6(1-9), 1984: 7(1-9), 1985: 8(1-9), 1986: 9(1-9), 1987: 10(1-8, S 8, 9), 1988: 11(1-12), 1989: 12(1-12), 1990: 13(1, S 1, 2-12), 1991: 14(1-12), 1992: 15(1-12), 1993: 16(1-12), 1994: 17(1-12), 1995: 18(1-12, S 13, S 14), 1996: 19(1-4, S 4, 5-12), 1997: 20(1-5, S 5, 6, S 6, 7-12), 1998: 21(1-12), 1999: 22(1-12), 2000: 23(1-9, S 9, 10-12), 2001: 24(1-10, S 10, 11-12), 2002: 25(1-6, S 11), 2002: 26(1-6), 2003: 27(1-6), 2003: 28(1-6, S 12), 2004: 29(1-6), 2004: 30(1-6), 2005: 31(1-6), 2005: 32(1-6), 2006: 33(1-6), 2006: 34(1-6), 2007: 35(1-6), 2007: 36(1-6), 2008: 37(1-6), 2008: 38(1-6), 2009: 39(1-6), 2009: 40(1-6), 2010: 41(1-6), 2010: 42(1-6), 2011: 43(1-6), 2011: 44(1-6), 2012: 45(1-6), 2012: 46(1-6), 2013: 47(1-6), 2013: 48(1, S1, 2-6), 2014: 49(1-6), 2014: 50(1, S 1, 2-6), 2015: 51(1-6), 2015: 52(1, S 1, 2, S 2, 3, S3, 4-6), 2016: 53(1-6), 2016: 54(1, S1, 2-6), 2017: 55(1-6), 2017: 56(1, S1, 2-6), 2018: 57(1-6), 2018: 58(1, S1, 2-6), 2019: 59(1-6), 2019: 60(1, S1, 2, S2, 3-6), 2020: 61(1-6), 2020: 62(1, S1, 2-6), 2021: 63(1-6), 2021: 64(1, S1, 2-6), 2022: 65(1, S1, 2-6), 2022: 66(1, S1, 2, S2, 3-6), 2023: 67(1-6), 2023: 68(1, S1, 2-6), 2024: 69(1-6), 2024: 70(1, S1, 2-6), 2025: 71(1-6), 2025: 72(1, S1, 2-6), 2026: 73(1, S1, 2-3)
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CLOCKSS Archive
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Preserved
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2026-04-13
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14 to 73
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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 (S6, 1 to 9, 11, 12); 3 (1 to 6); 4 (1 to 6); 5 (S1, 1 to 6); 6 (S1, 1 to 6); 7 (S1, 1 to 6); 19 (S4, 1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (S9, 1 to 9, 11, 12); 24 (S1, 1 to 9, 11, 12); 25 (S11, 1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (S12, 1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (, 1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (S1, 1 to 6); 53 (1 to 6); 54 (, 1 to 6); 55 (1 to 6); 56 (, 1 to 6); 57 (1 to 6); 58 (S2, 1 to 6); 59 (1 to 3, 5, 6); 61 (1 to 6); 62 (S1, 1 to 6); 63 (1 to 6); 64 (S1, 1 to 6); 65 (S1, 1 to 6); 66 (S1, 1 to 6); 67 (1 to 6); 68 (S1, 1 to 6); 69 (1 to 5); 71 (1 to 6); 72 (S1, 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 (S6, 1 to 9, 11, 12); 3 (1 to 6); 4 (1 to 6); 5 (S1, 1 to 6); 6 (S1, 1 to 6); 7 (S1, 1 to 6); 19 (S4, 1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (S9, 1 to 9, 11, 12); 24 (S1, 1 to 9, 11, 12); 25 (S11, 1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (S12, 1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (, 1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (S1, 1 to 6); 53 (1 to 6); 54 (, 1 to 6); 55 (1 to 6); 56 (S1, 1 to 6); 57 (1 to 6); 58 (S2, 1 to 6); 59 (1 to 3, 5, 6); 61 (1 to 6); 62 (S1, 1 to 6); 63 (1 to 6); 64 (S1, 1 to 6); 65 (S1, 1 to 6); 66 (S1, 1 to 6); 67 (1 to 6); 68 (S1, 1 to 6); 69 (1 to 5); 71 (1 to 6); 72 (1 to 4)
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