Search (5 results, page 1 of 1)

  • × author_ss:"Derr, R.L."
  • × year_i:[1980 TO 1990}
  1. Derr, R.L.: ¬The concept of information in ordinary discourse (1985) 0.00 
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    Source
    Information processing and management. 21(1985) no.6, S.489-500
  2. Derr, R.L.: ¬A classification of questions in information retrieval by conceptual presupposition (1982) 0.00 
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    Pages
    S.69-71
  3. Derr, R.L.: Questions: definitions, structure, and classification (1985) 0.00 
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    Source
    RQ. 24(1985), S.186-190
  4. Derr, R.L.: Information seeking expressions of users (1984) 0.00 
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    Source
    Journal of the American Society for Information Science. 35(1984) no.2, S.124-128
  5. Derr, R.L.: ¬A conceptual analysis of information need (1983) 0.00 
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    Source
    Information processing and management. 19(1983), S.273-278

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