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