1. Evaluation of the MEDLARS demand search service Author(s): Lancaster, F. Wilfrid (Frederick Wilfrid), 1933-2013 Publication: [Bethesda, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, 1968 Subject(s): Information SystemsInformation Storage and RetrievalLibraries, MedicalUnited StatesNational Library of Medicine (U.S.)
