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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 24 (1 to 10); 25 (, 1 to 10); 26 (, 1 to 10); 27 (, 1, 2, 3/4, 5/6, 7, 8, 9/10); 28 (, 1 to 8, 9/10); 29 (, 1 to 6, 7/8, 9, 10); 30 (, 1, 2, 3/4, 5, 6, 7/8, 9, 10); 31 (, 1 to 6, 7/8, 9, 10); 32 (, 1 to 10); 33 (, 1 to 10); 34 (, 1, 2, 3/4, 5 to 10); 35 (, 1 to 10); 36 (, 1 to 10); 37 (, 1 to 10); 38 (, 1 to 10); 39 (, 1 to 10); 40 (, 1/2, 3 to 7, 8/9, 10); 41 (, 1 to 10); 42 (, 1 to 7, 8/9, 10); 43 (, 1 to 4, 5/6, 7 to 10); 44 (, 1/2, 3 to 7, 8/9, 10); 45 (, 1/2, 3 to 8, 9/10); 46 (, 1 to 5, 6/7, 8 to 10); 47 (, 1, 2/3, 4 to 10); 48 (, 1 to 10); 49 (, 1 to 10); 50 (, 1 to 6, 7/8, 9/10); 51 (, 1 to 10); 52 (, 1 to 4, 5/6, 9/10, 11); 53 (, 1 to 4, 5/6, 7/8, 9 to 11); 54 (, 2 to 6, 7/8, 9 to 11); 55 (, 1 to 5, 11); 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 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 54
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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 7, 20 to 29, 32, 55
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CLOCKSS Archive
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In Progress
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2026-02-09
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20 to 31, 33 to 44, 49 to 55
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 20(1-9), 1991: 21(1-9), 1992: 22(1-9), 1993: 23(1-9), 1994: 24(1-10), 1995: 25(1-10), 1996: 26(1-10), 1997: 27(1-10), 1998: 28(1-10), 1999: 29(1-10), 2000: 30(1-10), 2001: 31(1-10), 2002: 32(1-10), 2003: 33(1-10), 2004: 34(1-10), 2005: 35(1-10), 2006: 36(1-10), 2007: 37(1-10), 2008: 38(1-10), 2009: 39(1-10), 2010: 40(1-10), 2011: 41(1-10), 2012: 42(1-10), 2013: 43(1-10), 2014: 44(1-10), 2015: 45(1-10), 2016: 46(1-10), 2017: 47(1-10), 2018: 48(1-10), 2019: 49(1-10), 2020: 50(1-10), 2021: 51(1-10), 2022: 52(1-11), 2023: 53(1-11), 2024: 54(1-11), 2025: 55(1-5, 8-11), 2026: 56(1-2, 11)
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CLOCKSS Archive
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Preserved
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2026-02-09
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32, 45 to 48
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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, 3/4, 5, 6, 7/8, 9); 4 (1/2, 3 to 7, 8/9); 5 (1 to 6, 7/8, 9/1); 31 (1 to 6, 7/8, 9); 32 (1 to 9); 33 (1 to 9); 34 (1, 2, 3/4, 5 to 9); 35 (1 to 9); 36 (1 to 9); 37 (1 to 9); 38 (1 to 9); 39 (1 to 9); 41 (1 to 9); 42 (1 to 7, 8/9); 43 (1 to 4, 5/6, 7 to 9); 44 (1/2, 3 to 7, 8/9); 45 (1/2, 3 to 8, 9/1); 46 (1 to 5, 6/7, 8, 9); 47 (1, 2/3, 4 to 9); 48 (1 to 9); 49 (1 to 9); 51 (1 to 9); 52 (1 to 4, 5/6, 7, 8, 9/1, 11); 53 (1 to 4, 5/6, 7/8, 9, 11)
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Library of Congress
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Preserved
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2025-04-07
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20 (1 to 9); 21 (1 to 9); 22 (1 to 9); 23 (1 to 9); 24 (1 to 10); 25 (1 to 10); 26 (1 to 10); 27 (1 to 3/4, 5/6, 7 to 9/10); 28 (1 to 9/10); 29 (1 to 7/8, 9, 10); 30 (1 to 3/4, 5 to 7/8, 9, 10); 31 (1 to 7/8, 9, 10); 32 (1 to 10); 33 (1 to 10); 34 (1 to 3/4, 5 to 10); 35 (1 to 10); 36 (1 to 10); 37 (1 to 10); 38 (1 to 10); 39 (1 to 10); 40 (1/2, 3 to 8/9, 10); 41 (1 to 10); 42 (1 to 8/9, 10); 43 (1 to 5/6, 7 to 10); 44 (1/2, 3 to 8/9, 10); 45 (1/2, 3 to 9/10); 46 (1 to 6/7, 8 to 10); 47 (1, 2/3, 4 to 10); 48 (1 to 10); 49 (1 to 10); 50 (1 to 7/8); 51 (2 to 4, 6, 8); 52 (1, 2, 4, 5/6, 7 to 9/10, 11); 53 (1 to 5/6, 7/8, 9 to 11); 54 (1 to 7/8, 9 to 11)
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