Sahu, Sudhansu Sekhar  . <br/><br/>
Insights into special education: behaviour modification of mentally retarded children through differential reinforcement /  
by Sudhansu Sekhar Sahu. 
 - New Delhi :   Kunal Books ,   2009 
 - 238 p. ;  
<br/><br/><label>ISBN: </label>978-81-908815-5-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Special education- Disability children
<br/><br/><label>Dewey Class. No.: </label>T  / P9