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  1. Gratch, B.; Settel, B.; Atherton, P.: Characteristics of book indexes for subject retrieval in the humanities and social sciences (1978) 10.60
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    Author
    Gratch, B.
  2. Miller, W.; Gratch, B.: Making connections : computerized reference services and people (1989) 10.60
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    Author
    Gratch, B.