RT Article T1 Human hallucinogenic drug research in the United States - a present-day case history and review of the process JF Journal of psychoactive drugs VO 23 IS 1 SP 29 OP 38 A1 Strassman, R. J. LA English YR 1991 UL https://krimdok.uni-tuebingen.de/Record/164004745X K1 Drogenforschung