The selection and use of essential medicines / 
WHO 
 - Geneva :  WHO 
 - vi, 162 p. 
 - WHO techical report series ;  946 .
<br/><br/>Incluye índice 
<br/><br/><label>ISBN: </label>978-92-4-120946-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicamentos