Educación especial  investigaciones y tendencias 
Richard J. Morris, Burton Blatt. 
 - Buenos Aires  Editorial Médica Panamericana  1989. 
 - 323 p.  25 cm. 
<br/><br/> Translation of: Special education. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>9500614510 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Special education literature.