Keller, Fred S. <br/><br/>
Principles of psychology :  a systematic text in the science of behavior / 
Fred S. Keller and William N. Schoenfeld. 
 - New York :  Appleton-Century-Crofts,  1950. 
 - xv, 431  p. 
<br/><br/><label>ISBN: </label>1406746730 :  BSP 30 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology.