Birney, Robert Charles <br/><br/>
Reinforcement: an enduring problem in psychology 

 - Princeton  Van Nostrand  1961 
 - 230p.  18cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reinforcement (Psychology)
<br/><br/><label>LC Class. No.: </label>BF319.B5