CheinI.Studies on narcotics use among juveniles. Hearings before the Subcommittee on Improvements in the Federal Criminal Code of the Committee on the Judiciary, United States Senate. (September 19, 20, and 21, 1955, Part 5). Washington, D. C.: U. S. Gov't Printing Office, 1956.
2.
PescorM. J.A statistical analysis of the clinical records of hospitalized drug addicts. Pub. Hlth Rep., Supplement No. 143. Washington, D. C.: U. S. Gov't Printing Office, 1943.