Spector, Tim D. / Snieder, Harold / MacGregor / Alex J.  <br/><br/>
Advances in Twin and Sib-Pair Analysis. 

 -  Greenwich Medical Media Ltd  2000 
 - 266 
<br/><br/><label>ISBN: </label>1-841100048 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstetrics
<br/><br/><label>National Library of Medicine Call No.: </label>WQ 235 S 2000