%0 Dataset %T Estimating the Elasticities of Demand for Cocaine and Heroin with Data from 21 Cities from the Drug Use Forecasting (DUF) Program, 1987-1991 %A Caulkins, Jonathan P. %D 2006-03-30 %R 10.3886/ICPSR06567.v1 %I Inter-university Consortium for Political and Social Research [distributor]