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Internet Archive
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Preserved
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2025-08-08
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3 to 8
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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 3); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1); 9 (2); 10 (1, 2); 11 (1, 2); 12 (1); 13; 14; 15; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29 (2, 3); 30 (1, 2-3); 31 (1 to 3); 32 (1 to 3); 33 (1-2, 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1, 2, 3-4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 3); 43 (1, 2, 3-4); 44 (1 to 4); 45 (1 to 4); 46 (1)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 46
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Portico
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Preserved
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2026-04-16
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Preserved : 1974/1975: 1(1-3), 1975/1976: 2(1-2), 1976/1977: 3(1-2), 1977/1978: 4(1-2), 1980: 5(1-2), 1982/1983: 6(1-2), 1986: 7(1), 1987: 8(1), 1987/1988: 9(1-2), 1989: 10(1-2), 1990: 11(1-2), 1991: 12(1), 1992: 13(1), 1993: 14(1), 1994: 15(1), 1995: 16(1), 1996: 17(1), 1997: 18(1), 1998: 19(1), 1999: 20(1), 2000: 21(1), 2001: 22(1), 2002: 23(1), 2003: 24(1), 2005: 25(1), 2006: 26(1), 2007: 27(1), 2008: 28(1), 2009: 29(1-3), 2010: 30(1-3), 2011: 31(1-3), 2012: 32(1-3), 2013: 33(1-3), 2014: 34(1-3), 2015: 35(1-3), 2016: 36(1-3), 2017: 37(1-3), 2018: 38(1-3), 2019: 39(1-4), 2020: 40(1-4), 2021: 41(1-4), 2022: 42(1-4), 2023: 43(1-4), 2024: 44(1-2, 4), 2025: 45(1-4), 2026: 46(1)
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LOCKSS Archive
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In Progress
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2026-04-13
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32
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LOCKSS Archive
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Preserved
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2026-04-13
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33 to 39
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Library of Congress
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Preserved
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2025-04-07
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38 (1 to 3); 39 (1 to 3-4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 3-4); 43 (1 to 3-4); 44 (1, 2)
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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; 18; 19; 21; 22; 23; 24; 25; 26; 27; 28; 29 (2, 3)
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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; 18; 19; 21; 22; 23; 24; 25; 26; 27; 28; 29 (2, 3)
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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, 2); 4 (1 to 4); 31 (1 to 3); 32 (1 to 3); 33 (1, 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1, 2, 3-4); 41 (1 to 4); 42 (1, 2, 3-4); 43 (1, 2); 44 (1 to 4)
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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, 2); 4 (1 to 4); 31 (1 to 3); 32 (1 to 3); 33 (1, 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1, 2, 3-4); 41 (1 to 4); 42 (1, 2, 3-4); 43 (1, 2); 44 (1 to 4)
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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 : 29 (1-3); 30 (1, 2-3); 31 (1-3); 32 (1-3); 33 (1-2, 3); 34 (1-3); 35 (1-3); 36 (1-3); 37 (1-3); 38 (1-3); 39 (1, 2)
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