Heaton-Ward, William Alan <br/><br/>
Mental subnormality :  subnormality and severe subnormality / 
by W. Alan Heaton-Ward 
 - 4th ed. 
 - Bristol :  J. Wright,  1975 
 - 146 p. :  ill. ;  22 cm. 
<br/><br/><label>ISBN: </label>0723603766 
<br/><br/><label>LCCN: </label>90-152268 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mentally handicapped<br/>Mental retardation