Duffy, Elizabeth. <br/><br/>
Activation and behaviour   
by Elizabeth Duffy 
 - New York  John Wiley and Sons  1962 
 - xvii, 384p.  incl. bibl., ind. 
<br/><br/><label>LCCN: </label>62-15174 
<br/><br/><label>Dewey Class. No.: </label>150.1943  / N62