All about drugs / by Franz Bergel and D. R. A. Davies with the collaboration of Peter Ford. Bergel, Franz. Davies, David Richard Aylmer, joint author. Ford, Peter. Drug abuse. HV5801 .B44 616.863 BEA includes index. Includes bibliographical references. London : Nelson ; c1970. c1970. 1970 Text x, 203 p., 8 plates. : eng