Language and communication in the mentally handcapped 
edited by Paul Berry 
 - Baltimore  University Park Press  1976 
 - viii, 215 p. : ill. ; 24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0839109253 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mentally handicapped children--Education--Language arts<br/>Mentally handicapped children--Language<br/>Mentally handicapped--Means of communication