Organization and members, 1989 / National Academy of Sciences, National Academy of engineering, Institute of Medicine, National Research Council. National Academy of Sciences (U.S.) Institute of Medicine (U.S.) National Academy of Engineering. National Research Council (U.S.) National Academy of Sciences (U.S.) Directories. Institute of Medicine (U.S.) Directories. National Academy of Engineering Directories. 061.73 NAO Washington D.C. : National Research Council, 1989. 1989. 1989 Text xii, 474 p. ; eng