Drug dependence among secondary school students at Bogota, Barranquilla and Bucaramanga (Colombia) : survey of the prevalence of drug use : study / undertaken by the Mental Health Division, Department of Medical Care, Ministry of Public Health of Colombia.
Drug dependence among secondary school students at Bogota, Barranquilla and Bucaramanga (Colombia) : survey of the prevalence of drug use : study / undertaken by the Mental Health Division, Department of Medical Care, Ministry of Public Health of Colombia.