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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 5); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 6); 10 (s1, 1 to 6); 11 (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); 20 (1 to 4, 5‐6); 21 (1 to 5)
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Portico
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Preserved
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2026-04-16
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Preserved : 1980/1981: 1(1-5), 1982: 2(1-4), 1983: 3(1-4), 1984: 4(1-4), 1985: 5(1-4), 1986: 6(1-4), 1987: 7(1-4), 1988: 8(1-4), 1989: 9(1-6), 1990: 10(1-6), 1991: 11(1-6), 1992: 12(1-6), 1993: 13(1-6), 1994: 14(1-6), 1995: 15(1-6), 1996: 16(1-6), 1997: 17(1-6)
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CLOCKSS Archive
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Preserved
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2026-04-13
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6, 9, 11 to 21
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Portico
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Preserved
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2026-04-16
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Preserved : 2000: 20(5-6)
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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 4, 5‐6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 5)
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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 4, 5‐6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 5)
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