Bierens de Haan, J. A.  1883-1958 <br/><br/>
Animal psychology :  its nature and its problems / 

 - London :  Hutchinson's University Library,  1947 
 - 160 p :  ill. ;  18 cm. 
<br/><br/>Bibliography: p.155-156 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal intelligence<br/>Psychology, Comparative
<br/><br/><label>Dewey Class. No.: </label>151.3  / BIA  1947