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White, H.D.; Griffith, B.C.: Quality of indexing in online data bases (1987)
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- Information processing and management. 23(1987), S.211-224
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MacCain, K.W.; White, H.D.; Griffith, B.C.: Comparing retrieval performance in online data bases (1987)
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- Information processing and management. 23(1987), S.539-553