Benson, Ralph.C. <br/><br/>
Benson and penroll's hand book of obstetrics and gynecology 

 - 9th ed. 
 - New York  McGraw - Hill  1994 
 - 817p. 
<br/><br/><label>ISBN: </label>0071054057 
<br/><br/><label>Universal Decimal Class. No.: </label>618.1:618.2  / B26