Language of the Mentally Retarded 

 - Baltimore :  University Park Press,  1972 
 - 252 p.  ill 
<br/><br/><label>ISBN: </label>0839106297 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mentally handicapped--Language--Congresses.
<br/><br/><label>LC Class. No.: </label>RC570  / L36