Mental retardation : a manual for psychologists  / 
National Institute for the mentally handicapped. 
 - Secunderabad:  National Institute for the mentally handicapped,  2006. 
 - v, 167p.; 24cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>204 
<br/><br/><label>Dewey Class. No.: </label>371.9 MEN