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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 54
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 1(1-2), 1974: 2(1-2), 1975: 3(1-2), 1976: 4(1-2), 1977: 5(1-2), 1978: 6(1-2), 1979: 7(1-2), 1980: 8(1-2), 1981: 9(1-2), 1982: 10(1-3), 1983: 11(1-3), 1984: 12(1-2), 1985: 13(1-2), 1986: 14(1-2), 1987: 15(1-2), 1988: 16(1-4), 1989: 17(1-4), 1990: 18(1-4), 1991: 19(1-4), 1992: 20(1-4), 1993: 21(1-4), 1994: 22(1-4), 1995: 23(1-4), 1996: 24(1-4), 1997: 25(1-4), 1998: 26(1-4), 1999: 27(1-4), 2000: 28(1-4), 2001: 29(1-4), 2002: 30(1-4), 2003: 31(1-4), 2004: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2007: 35(1-4), 2008: 36(1-4), 2009: 37(1-4), 2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2015: 43(1-4), 2016: 44(1-6), 2017: 45(1-6), 2018: 46(1-12), 2019: 47(1-12), 2019/2020: 48(1-12), 2021: 49(1-12), 2022: 50(1-12), 2023: 51(2-12), 2024: 52(1-12), 2025: 53(1-11), 2026: 54(1)
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Library of Congress
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Preserved
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2025-04-07
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46 (2 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1 to 12); 50 (1 to 12); 51 (1 to 12); 52 (1 to 11)
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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 : 32 (1); 36 (2-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-6); 45 (1-6); 46 (1-12); 47 (1-12)
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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 : 3 (1, 3, 4); 4 (1 to 4); 5 (1 to 9, 11, 12); 25 (1 to 4); 26 (1, 3, 4); 27 (1 to 4); 28 (1, 2, 4); 29 (1, 3, 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 6); 45 (1 to 6); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12)
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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 : 3 (1, 3, 4); 4 (1 to 4); 5 (1 to 9, 11, 12); 25 (1 to 4); 26 (1, 3, 4); 27 (1 to 4); 28 (1, 2, 4); 29 (1, 3, 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 6); 45 (1 to 6); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12)
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