Narcotics and alcoholism, 1971 / 2 May 17, 1971, Chicago, Ill., June 25, 1971, New York, N.Y (Narcotics and alcoholism, 1971 hearings before the Subcommittee on Alcoholism and Narcotics of the Committee on Labor and Public Welfare, United States, 92 congress, session 1 ..., 1971)