The use of essential drugs. 

 - Geneva :  World Health Organization (WHO) ,  1988 
 - 63p. :  ill. ;   20 cm.  
 - WHO technical report series, 770 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9241207701 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drug Utilization--Congresses 
<br/><br/><label>Gov. Doc. Class. No.: </label>UN WHO TRS-770