@book{12686,
	author = {WHO Expert Committee on Drug Dependence (1989 : Geneva). and World Health Organization.},
	title = {WHO Expert Committee on Drug Dependence [meeting held in Geneva, 17-22 April 1989] : twenty-sixth report.},
	publisher = {World Health Organization,},
	year = {1989.},
	series = {WHO technical report series : 787.},
	address = {Geneva : }
}