Opiate drug consumption patterns in Asia :  a report of a regional workshop / 
edited by V. Navaratnam, R.L. Retka [and] P.H. Hughes. 
 - [Penang] :  National Drug Research Centre,  [1983] 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Opium habit -- Asia.--Opium habit -- Asia.<br/>Opium trade -- Asia.--Opium trade -- Asia.