@book{56,
	author = {Efron, D.H. and Symposium on Ethnopharmacologic Search for Psychoactive Drugs (1967 : San Francisco, California).},
	title = {Ethnopharmacologic search for psychoactive drugs : proceedings [of the] Symposium, San Francisco, California, 28-30 January 1967.},
	publisher = {U.S. Department of Health, Education, and Welfare,},
	year = {1967.},
	series = {(Workshop series of Pharmacology Section ; no. 2)},
	address = {Maryland : }
}