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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, 3); 2 (1 to 3); 3 (1 to 3); 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 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4)
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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 : 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4)
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CLOCKSS Archive
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In Progress
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2026-06-15
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LOCKSS Archive
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Preserved
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2026-06-15
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32 to 37
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Portico
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Preserved
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2026-06-11
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Preserved : 1964: 1(1)
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Portico
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Preserved
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2026-06-11
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Preserved : 1969: 6(3)
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Portico
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Preserved
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2026-06-11
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Preserved : 1973: 10(5-6)
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Portico
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Preserved
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2026-06-11
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Preserved : 1978: 15(1)
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Portico
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Preserved
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2026-06-11
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Preserved : 1983: 20(1)
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Portico
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Preserved
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2026-06-11
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Preserved : 1995: 32(1-4), 1996: 33(1-4), 1997: 34(1-4), 1998: 35(1-4), 1999: 36(1-4), 2000: 37(1-4)
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CLOCKSS Archive
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Preserved
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2026-06-15
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32 to 37
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