Statistics on psychotropic substances for 1981 ,  Statistiques des substances psychotropes pour 1981 ,  Estadísticas de sustancias sicotrópicas para 1981. 

 - New York :  United Nations,  1978-1984 
 - xli, 86 p. : 
<br/><br/><label>ISBN: </label>9210480406 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychotropic drugs.
<br/><br/><label>Dewey Class. No.: </label>615.788  / St