Psychotropic Substances : Statistics for 2005 : Assessments of Annual Medical and Scientific Requirements for Substances in Schedules II, III and IV of the Convention on Psychotropic Substances of 1971 / UN. International Narcotics Control Board, March 2007
PDF - http://www.incb.org/pdf/e/tr/psy/2006/psychotropic_substances_2006.pdf