Essentials of behaviour genetics 
by David A. Hay  
 - London  Blackwell  1985 
 - vii, 359p.  ill.  23cm 
<br/><br/> Includes bibliographical and index 
<br/><br/><label>ISBN: </label>0867930640 
<br/><br/><label>Dewey Class. No.: </label>155.7