Walker, Stephen,  1944- <br/><br/>
Learning and reinforcement / 
(by Stephen Walker). 
 - London :  Methuen,  1975 
 - Essential psychology ;  A3 .
<br/><br/>Bibl., p.132-141. - Index 
<br/><br/><label>ISBN: </label>0416827802 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology