Essentials of pharmacology : introduction to the principles of drug action / edited by John A. Bevan. Bevan, John A., 1930- Pharmacology. RM300 .E84 1976 615.1 BEE Includes bibliographical references and index. Hagerstown, Md. : Medical Dept., Harper & Row, c1976. c1976. 1976 Text xix, 649 p., [1] leaf of plates : eng