Polgar Stephen & Thomas Shane A. <br/><br/>
Introduction  to research in the health sciences 

 - Second edition 
 - Churchill livingstone, London  1981 
 - x,357pp 
<br/><br/><label>ISBN: </label>0 443 -04363-9 
<br/><br/><label>Dewey Class. No.: </label>613.072 Pol /Tho