RT Book T1 Drug abuse patterns among young polydrug users and urban Appalachian youths T2 DHEW publication ADM T2 NIDA services research report JF DHEW publication / ADM LA English PP Rockville, Md. PB National Institute of Drug Abuse YR 1980 UL https://krimdok.uni-tuebingen.de/Record/1097759628 CN 362.2/932/0973