Williams obstetricia 
F. Gary Cunningham ... [et al.]. 
 - 20th ed. 
 - Bogotá  Medica Panamericana  c1998. 
 - viii, 1352 p.  ill.  29 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>8479034130 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstetrics<br/>Obstetrics
<br/><br/><label>LC Class. No.: </label>RG524  / .W7 1993 
<br/><br/><label>Dewey Class. No.: </label>618.2 
<br/><br/><label>National Library of Medicine Call No.: </label>WQ 100 W7283 1993