摘要:A comparison of the MEDLARS data base as it is currently available from the National Library of Medicine and Bibliographic Retrieval Services (BRS), Inc., is presented in chart format, and some major capability differences between the two systems are highlighted. The information included justifies the dual availability of the data base in health sciences libraries. This paper is intended for searchers and others familiar with one or both systems. Administrators considering the acquisition of the BRS system may find the study useful.