WHO Expert Committee on Drug Dependence :  Thirty-first report / 
World Health Organization. 
 - Geneva :  World Health Organization,  1999. 
 - v, 23 p. ;  20 cm. 
 - WHO Technical Report Series  887  0512-3054 .
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>92-4-120887-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychotropic drugs--classification<br/>Psychotropic drugs--pharmacology<br/>Narcotics--classification<br/>Narcotics--pharmacology<br/>Cadependency--psychology<br/>Guidelines