Claridge, Gordon. <br/><br/>
Personality differences and biological variations  A study of twins 
by Gordon Claridge, Sandra Canter and W.I. Hume 
 - Oxford  Pergamon Press  1973 
 - viii, 175p.  incl. app., ind. 
 - International series of Monographs in Experimental Psychology  V.18 .
<br/><br/><label>ISBN: </label>0080171249 
<br/><br/><label>Dewey Class. No.: </label>155.22  / N73