Walker Edward L <br/><br/>
Conditioning and instrumental learning 

 - Belmont  Wadsworth            1967 
 - xii, 161p  cm. 
 - Basic concepts in psychology serids .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>S:431, K7