Pitkin , Roy M. <br/><br/>
The year book of obsteterics and gynecology 1981. 

 - London:  Year Book Medical Publisher,  1981. 
 - 442p.:ill. 
<br/><br/><label>ISBN: </label>0815166907 
<br/><br/><label>National Library of Medicine Call No.: </label>W 1  / Y39 1981