Werner Heinz <br/><br/>
Comparative psychology of mental development   

 - 
 - New York  Science edition  1961 
 - 564 p.  21 cm. 
 -   .
<br/><br/>  
<br/><br/>  Psychology, Comparative , Ethology, Animal 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal<br/>Ethology<br/>Psychology, Comparative 
<br/><br/><label>Dewey Class. No.: </label>156  / WER