RT Book T1 Toward a heroin problem index: an analytical model for drug abuse indicators T2 DHEW publication ADM JF DHEW publication / ADM A1 Person, Philip H. A1 Retka, Robert L. A1 Woodward, J. Arthur LA English PP Rockville, Md. PB U.S. Dept. of Health, Education and Welfare, National Institute on Drug Abuse YR 1976 UL https://krimdok.uni-tuebingen.de/Record/1098718682