Chopra, Kamala <br/><br/>
Reinforcement among infants / 
Kamala Chopra with a foreword by Salamat Ullah 
 - Agra :  National Psychological Corporation,  1983  
 - 103 p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology<br/>Child psychology
<br/><br/><label>Dewey Class. No.: </label>136.7  / CHO N83R