The education of dull children at the primary stage / 

 - London :  University of London Press ,  1957. 
 - 176 p. :  illus. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children with mental disabilities--Education
<br/><br/><label>LC Class. No.: </label>LC4602 
<br/><br/><label>Dewey Class. No.: </label>371.92