DIVISION OF NARCOTIC DRUGS
The first two years of the United Nations Fund for Drug Abuse Control
Medico-social survey of 662 drugs users (April 1971 - May 1972)
Cannabis ideology: A study of opinions and beliefs centering around cannabis consumption
Tolerance to and dependence on cannabis
The Prevention of drug abuse by lowering per capita consumption: Distributions of consumption in samples of Canadian adults and British university students
An experimental framework for evaluation of dependence liability of various types of drugs in monkeys