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Internet Archive
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Preserved
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2025-08-08
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15 to 23
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 16, 18 to 37
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 1(1-12), 1989: 2(1-12), 1990: 3(1-12), 1991: 4(1-12), 1992: 5(1-12), 1993: 6(1-12), 1994: 7(1-12), 1995: 8(1-12), 1996: 9(1-12), 1997: 10(1-12), 1998: 11(1-12), 1999: 12(1-12), 2000: 13(1-24), 2001: 14(1-24), 2002: 15(1-24), 2003: 16(1-24), 2004: 17(1-24), 2005: 18(1-24), 2006: 19(1-24), 2007: 20(1-24), 2008: 21(1-24), 2009: 22(1-24), 2010: 23(1-24), 2011: 24(1-24), 2012: 25(1-24), 2013: 26(1-24), 2014: 27(1-24), 2015: 28(1-24), 2016: 29(1-24), 2017: 30(1-24), 2018: 31(1-24), 2019: 32(1-24), 2020: 33(1-24), 2021: 34(1-24), 2022: 35(1-24), 2023: 36(1-24), 2024: 37(1-7, 15, 24), 2025: 38(10-24), 2026: 39(1-2)
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LOCKSS Archive
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In Progress
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2026-02-09
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17, 38
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CLOCKSS Archive
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In Progress
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2026-02-09
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25, 26, 28, 33 to 38
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CLOCKSS Archive
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Preserved
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2026-02-09
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27, 29 to 32
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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 : preprint (216)
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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 : preprint (214 to 216); ; 2 (3, 11); 3 (2, 4 to 6, 8, 12, 13, 16, 17, 19, 21 to 24); 4 (4); 5 (6); 6 (3); 8 (12); 9 (8); 12 (1); 14 (12); 23 (22); 25 (13); 26 (6, 23); 27 (1); 28 (5, 9, 12, 23); 29 (1 to 9, 11 to 19, 21 to 24); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 5, 7 to 9, 11, 12, 18, 19, 21 to 23); 33 (1, 2, 4 to 9, 11 to 14, 16, 18, 19, 21 to 24); 34 (1, 8, 9, 11, 21 to 24); 35 (1 to 9, 11, 12, 14 to 19); 142 (12)
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