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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 3); 2 (, 1, 2); 3 (, 1 to 3); 4 (, 1 to 3); 5 (, 1 to 3); 6 (, 1 to 3); 7 (, 1 to 3); 8 (, 1 to 3); 9 (, 1 to 3); 10 (, 1 to 3); 11 (, 1 to 3); 12 (, 1 to 3); 13 (, 1, 2); 15 (, 2, 3); 16 (, 1, 2); 18 (, 2, 3); 19 (, 1 to 3); 20 (, 1 to 3); 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2005; 2006; 2008; 2009; 2010
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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 : 1 (1 to 3); 2 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 7(1-3), 1998: 8(1-3), 1999: 9(1-3), 2000: 10(1-3), 2001: 11(1-3), 2002: 12(1-3), 2003: 13(1-3), 2004: 14(1-3), 2005: 15(1-3), 2006: 16(1-3), 2007: 17(1-3), 2008: 18(1-3), 2009: 19(1-2), 2010: 20(1-2)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 20
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 20
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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 3)
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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 (2, 3); 2 (1, 2); 3 (1-3); 4 (1-3); 5 (1-3); 6 (1-3); 7 (1-3); 8 (1-3); 9 (1-3); 10 (1-3); 11 (1-3); 12 (1-3); 13 (1-3); 14 (1, 3); 15 (1-3); 16 (1-3); 17 (1-3); 18 (1-3)
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