Balaskas, Janet, <br/><br/>
The Encyclopedia of Pregnancy and Birth : 

 -  Little Brown GBR,  1989. 
 - 352 pages 
<br/><br/><label>ISBN: </label>9780316906166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health & Fitness.
<br/><br/><label>Dewey Class. No.: </label>618.2  / BAL