Human hallucinogenic drug research in the United States: a present-day case history and review of the process. J Psychoactive Drugs • 1991 • DOI: 10.1080/02791072.1991.10472572 (opens in new tab) Copy APA Copy BibTeX Relevant 0 Not relevant 0 Study at a glance AI-extracted from the abstract Characteristics Peer reviewed Abstract Human hallucinogenic drug research in the United States: a present-day case history and review of the process.