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LOCKSS Archive
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In Progress
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2026-06-22
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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 to 6); 4 (1 to 4, 5-6); 5 (1, 2-3, 4 to 6); 6 (1, 2-3, 4, 5-6); 7 (1, 2-3, 4 to 6); 8 (1); 9; 10; 11 (2, 3, 4-6); 12 (1 to 3, 4-5, 6); 13 (1); 14; 15; 16; 17 (2, 3, 4-5, 6); 18 (1); 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30 (2 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1, 2, 3-4, 5-6); 34 (1, 2-3, 4); 35 (1, 2-3, 4, 5-6); 36 (1 to 4, 5-6); 37 (1-2, 3-4); 38 (1); 39 (2 to 4); 40 (1 to 4); 41 (1, 2, 3-4); 42 (1 to 4); 43 (1 to 4); 44 (1-2, 3, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1, 2, 3-4); 49 (1 to 4); 50 (1, 2, 3-4); 51 (1-2, 3, 4); 52 (1 to 4); 53 (1-2, 3-4); 54 (1 to 4); 55 (1 to 4); 56 (1, 2/3, 4); 57 (1, 2, 3/4); 58 (1-4); 59 (2-3, 4); 73 (3-4)
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Portico
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Preserved
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2026-06-18
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Preserved : 1960: 9(1), 1961: 10(1)
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Portico
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Preserved
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2026-06-18
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Preserved : 1971: 24(1)
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Portico
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Preserved
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2026-06-18
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Preserved : 1973: 27(1)
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Portico
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Preserved
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2026-06-18
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Preserved : 1974: 30(2)
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Portico
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Preserved
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2026-06-18
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Preserved : 1985: 42(1)
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Portico
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Preserved
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2026-06-18
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Preserved : 1992: 49(2)
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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 : 58 (1); 59 (2, 4)
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