Perry, Natalie. <br/><br/>
Teaching the mentally retarded child. 

 - New York :  Columbia University Press,  [1962] 
<br/><br/> First published in 1960. 
<br/><br/>Bibliography: p. 269-271. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mentally handicapped children -- Education.--Mentally handicapped children -- Education.