RT Book T1 Health and educational effects of marijuana on youth: hearing before the Subcommittee on Alcoholism and Drug Abuse of the Committee on Labor and Human Resources, U.S. Senate, 97:1 on examination of the health and education effects of marijuana on youth, October 21, 1981 LA English PP Washington, D.C. PB U.S. Gov. Print. Office YR 1981 UL https://krimdok.uni-tuebingen.de/Record/1090614330