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Internet Archive
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Preserved
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2025-08-08
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3 to 4
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CLOCKSS Archive
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Preserved
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2026-02-09
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63 to 66, 68, 69, 71 to 80
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CLOCKSS Archive
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In Progress
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2026-02-09
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67, 70
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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 88
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CLOCKSS Archive
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Preserved
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2026-02-09
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84 to 98
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 2(1-6), 1969: 3(1-6), 1970: 4(1-6), 1971: 5(1-12), 1972: 6(1-12), 1973: 7(1-12), 1974: 8(1-7, 9-12), 1975: 9(1-12), 1976: 10(1-7, 10-12), 1977: 11(1-7, 10-12), 1978: 12(8-12), 1979: 13(S 5, 8-12), 1980: 14(1-9), 1981: 15(1-4, S 4, 5-9), 1982: 16(S 1, 2-4, S 4, 5-9), 1983: 17(1-9), 1984: 18(1-4, S 4, 5-12), 1985: 19(1-12), 1986: 20(1-7, 10-12), 1987: 21(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 24(1-6), 1989: 25(1-6), 1989: 26(1-6), 1990: 27(1-6, S 6), 1990: 28(1-2, 4-6), 1991: 29(1-6), 1991: 30(1-6), 1992: 31(1-6), 1992: 32(2), 1993: 33(S 1, 4, S 4, S 5, 6), 1993: 34(1-6), 1994: 35(1-6), 1994: 36(1, S 1, 2-6), 1995: 37(1-6), 1995: 38(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 48(2-6), 2001: 49(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 52(1-6), 2003: 53(1-6), 2003: 54(1-6), 2004: 55(1-6), 2004: 56(1-6), 2005: 57(1-4, 5, Part 1, 5, Part 2, 6), 2005: 58(1-6), 2006: 59(1-3, 4, Part 1, 5-6), 2007: 61(5, Part 1, 5, Part 2), 2007: 62(1-6), 2008: 63(1-6), 2008: 64(1-6), 2009: 65(1-5, 5, Part 2, 6), 2009: 66(1-6), 2010: 67(1-6), 2010: 68(1, S 1, 2-6), 2011: 69(1-6), 2011: 70(S 5), 2012: 71(1-6), 2012: 72(1-6), 2013: 73(1-6), 2013: 74(S 1, 2-6), 2014: 75(1-6), 2014: 76(1-6), 2015: 77(1-3, 5-6), 2015: 78(1-2, 4-6), 2016: 79(1-6), 2016: 80(1-4, 6), 2017: 81(1-6), 2017: 82(1-6), 2018: 83(1-6), 2018: 84(1-6), 2019: 85(1-7), 2019: 86(1, S 1, 2-6), 2020: 87(1, S 1, 2-7), 2020: 88(1-6), 2021: 89(1-7), 2021: 90(1, S 1, 2-6), 2022: 91(1-7), 2022: 92(1-6), 2023: 93(1-7), 2023: 94(1-6), 2024: 95(1-7), 2024: 96(1-7), 2025: 97(1-7), 2025: 98(1, S 1, 2-7)
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Portico
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Preserved
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2026-02-12
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Preserved : 1967: 1(1-6), 1968: 2(1-6), 1969: 3(1-6), 1970: 4(1-6), 1971: 5(1-12), 1972: 6(1-12), 1973: 7(1-12), 1974: 8(1-12), 1975: 9(1-12), 1976: 10(1-12), 1977: 11(1-12), 1978: 12(1-4, S 4, 5-12), 1979: 13(1-4, 5, Part 1, 5, Part 2, 6-12), 1980: 14(1-12), 1981: 15(1-4, S 4, 5-12), 1982: 16(S 1, 2-4, S 4, 5-12), 1983: 17(1-3, 4, Part 1, 4, Part 2, 5-12), 1984: 18(1-4, S 4, 5-12), 1985: 19(1-12), 1986: 20(1-12), 1987: 21(1-6), 1987: 22(1-6), 1988: 23(1-6), 1988: 24(1-6), 1989: 25(1-6), 1989: 26(1-6), 1990: 27(1-6, S 6), 1990: 28(1-6), 1991: 29(1-6), 1991: 30(1-6), 1992: 31(1-6), 1992: 32(1-6), 1993: 33(1, S 1 1, 2-4, S 4, 5, S 5, 6), 1993: 34(1-6), 1994: 35(1-6), 1994: 36(1, 1, Part 1, 2-6), 1995: 37(1-6), 1995: 38(1-6), 1996: 39(1-2, s2 4, 3-6), 1996: 40(1-6), 1997: 41(1-4, 4, Part 2, 5-6), 1997: 42(1-6), 1998: 43(1-2, s2 4, 3-6), 1998: 44(1-3), 1999: 45(1, PART 1 OF 2 5, 3-4p1 of 2, 6), 1999: 46(1-6), 2000: 47(1-6), 2000: 48(1-6), 2001: 49(1-6), 2001: 50(1-6), 2002: 51(1-6), 2002: 52(1-6), 2003: 53(1-6), 2003: 54(1-3), 2004: 55(1-6), 2004: 56(1-6), 2005: 57(1-4, 5, Part 1, 5, Part 2, 6), 2005: 58(1-6), 2006: 59(1, S 1 4, 2-3, 4, Part 1, 5-6), 2006: 60(1-6), 2007: 61(1-4, 5, Part 1, S 5, Part 2, 6), 2007: 62(1-6), 2008: 63(1-6), 2008: 64(1-6), 2009: 65(1-5, S 5 Part 2, 6), 2009: 66(1-6), 2010: 67(1-6), 2010: 68(1-6), 2011: 69(1-4, 5, Part 1, 5, Part 2, 6), 2011: 70(1-5, S 5, 6)
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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 : 9 (Suppl 1, 1 to 6); 83 (3); 84 (1); 85 (3, 6, 7); 86 (1, 2, 5); 87 (Suppl 1, 1 to 7); 88 (Suppl 1, 1 to 6); 89 (1 to 7); 91 (1 to 7); 92 (1 to 6); 93 (1 to 7); 94 (1 to 6); 95 (1 to 7); 96 (1 to 7); 97 (1)
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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 : 9 (Suppl 1, 1 to 6); 83 (3); 84 (1); 85 (3, 6, 7); 86 (1, 2, 5); 87 (Suppl 1, 1 to 7); 88 (Suppl 1, 1 to 6); 89 (1 to 7); 91 (1 to 7); 92 (1 to 6); 93 (1 to 7); 94 (1 to 6); 95 (1 to 7); 96 (1 to 7); 97 (1)
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