Psychedelic Insights Survey
Have you ever taken a psychedelic and had an
experience that was psychologically insightful?
Help our researcher friends at Johns Hopkins &
take their Survey
Ethnopharmacologic Search for Psychoactive Drugs 1967
Daniel H. Efron
Pub Date :
Edition(s) at Erowid :
U.S. Dept of Health, Education, and Welfare
back to library
back to books
Created by Erowid - Nov 17, 2003
Modified - Dec 21, 2017
Content & design © 1995-2017 Erowid.org. Permission required before publicly reproducing Erowid info.