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CLOCKSS Archive
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In Progress
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2026-02-09
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LOCKSS Archive
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In Progress
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2026-02-09
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 4(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1967: 5(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 7(1), 1970: 8(1), 1971: 9(1), 1972: 10(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 11(1), 1974: 12(1), 1975: 13(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 14(3), 1977: 15(1, 3), 1978: 16(1-3), 1979: 17(1-3), 1980: 18(1-3), 1981: 19(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1982: 20(2), 1983: 21(1), 1984: 22(1, 6), 1985: 23(3-6)
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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 : 5 (2, 5); 45 (3, 5); 46 (6, 8); 47 (4, 5, 7); 48 (Supplement_1, 6); 51 (3, 5); 52 (2, 4, 6); 53 (1, 2); 54 (3 to 6, 8); 55 (1)
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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 : 5 (2, 5); 45 (3, 5); 46 (6, 8); 47 (4, 5, 7); 48 (Supplement_1, 6); 51 (3, 5); 52 (2, 4, 6); 53 (1, 2); 54 (3 to 6, 8); 55 (1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2014: 52(2)
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