Harry Helson <br/><br/>
Adaptation-Level Theory : An Experimental and Systematic approach to Behaviour 

 - New York  Harper & Row Publication  1964 
 - 732p 
<br/><br/>Harry Helson: Adaptation-Level Theory : An Experimental and Systematic approach to Behaviour.  New York.  Harper & Row Publication, 1964.--(150HEL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>150  / HEL