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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); 2 (2 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6)
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Portico
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Preserved
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2026-05-28
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Preserved : 1986: 1(1)
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Portico
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Preserved
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2026-05-28
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Preserved : 1987: 2(1-4), 1988: 3(1-4), 1989: 4(1-4), 1990: 5(1-6), 1991: 6(1-6), 1992: 7(1-6), 1993: 8(1-6), 1994: 9(1-6), 1995: 10(1-6), 1996: 11(1-6), 1997: 12(1-6)
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CLOCKSS Archive
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Preserved
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2026-05-25
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6 to 24
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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 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6)
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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 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 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 : 21 (1-6); 22 (1-6)
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