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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (s1, 1 to 6); 2 (1 to 6); 3 (s2, 1 to 6); 4 (1 to 6); 5 (s3, 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); 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, 2, 4, 5); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (2)
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Portico
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Preserved
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2026-05-21
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Preserved : 1981: 1(1-6), 1982: 2(1-6), 1983: 3(1-6), 1984: 4(1-6), 1985: 5(1-5, S 5, 6), 1986: 6(1-6), 1987: 7(1-6), 1988: 8(1-6), 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), 1998: 18(1-6), 1999: 19(4)
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CLOCKSS Archive
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Preserved
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2026-05-25
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5, 6, 10 to 21
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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); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (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); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6)
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