The nature of reinforcement ; edited by Robert Glaser. 

 - New York:   Academic Press,   1971.  
 - 379 p. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation in education<br/>Reinforcement (Psychology)
<br/><br/><label>Dewey Class. No.: </label>153.1534