William's obstetrics / 
F. Gary Cunningham...[et al]. 
 - 21st ed. 
 - NewYork :  McGraw-Hill ,  2001. 
 - ix,1668 p. :  ill. ;  28 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0071121951 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstetrics.
<br/><br/><label>National Library of Medicine Call No.: </label>WQ100  / W674 2001