1. Initial online training class: course workbook Author(s): National Library of Medicine (U.S.) Publication: [Bethesda, Md. : National Library of Medicine, 1984] Subject(s): MEDLARSInformation SystemsInformation Storage and Retrieval
2. The MEDLARS story at the National Library of Medicine Publication: [Washington, D.C.] : U.S. Dept. of Health, Education and Welfare, Public Health Service, 1963 Subject(s): MEDLARSInformation SystemsInformation Storage and RetrievalLibraries, MedicalUnited States