Pardo de Vélez, Graciela. <br/><br/>
Investigación en salud  factores sociales 
Graciela Pardo de Vélez, Marlene Cedeño Collazos; rev. técnica, Juan Carlos Villalba Gonzźalez 
 - Santafé de Bogotá  McGraw-Hill  c1997. 
 - xii, 344 p.  ill.  27 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9586006484  40.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public health--Research--Social aspects.<br/>Medical sciences--Research--Social aspects.<br/>Medicine.--Research--Social aspects.