RT Book T1 Keep off the grass: a scientific enquiry into the biological effects of marijuana T2 Pergamon international library of science, technology, engineering and social studies A1 Nahas, Gabriel G. 1920-2012 LA English PP Oxford New York PB Pergamon Press YR 1979 ED Rev. ed. UL https://krimdok.uni-tuebingen.de/Record/011083166 NO Previous ed. published by Reader's Digest Press, New York, 1976 CN RA1242.C17 SN 0080237797 SN 0080237800 K1 Marijuana : Toxicology K1 Marijuana : Physiological effect K1 Marijuana : Physiological effect : Research K1 Marihuana