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Gratch, B.; Settel, B.; Atherton, P.: Characteristics of book indexes for subject retrieval in the humanities and social sciences (1978)
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- Indexer. 11(1978), S.14-22
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Bishop, A.P.; Liddy, E.D.; Settel, B.: Index quality study : pt.1: quantitative description of back-of-the-book indexes (1991)
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Liddy, E.D.; Bishop, A.P.; Settel, B.: Index quality study : pt.2: publishers' survey and qualitative assessment (1991)
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