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  • × year_i:[1960 TO 1970}
  1. Lancaster, F.W.; Mills, J.: Testing indexes and index language devices : the ASLIB Cranfield project (1964) 7.91 
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  2. Lancaster, F.W.: On the need for role indicators in postcoordinate retrieval systems (1968) 7.91 
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  3. Lancaster, F.W.: MEDLARS : report on the evaluation of its operating effiency (1961) 7.91 
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