Williams obstetrics 
F. Gary Cunningham �[& six  others]. 
 - 20th ed. 
 -  Appleton & Lange,  1997 
 - viii, 1448 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>0-8385-9642-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstetrics.
<br/><br/><label>Dewey Class. No.: </label>618.2 W7211 1997