Mental retardation and developmental disabilities  volume 13 /  [Texte imprimé]. 
ed. by Joseph Wortis 
 - New York:  Plenum Press,  1984 
 - 1 vol. (XX-210 p.) ;  25 cm 
<br/><br/>Bibliogr. p. 202-206 
<br/><br/><label>ISBN: </label>0-306-41456-2 
<br/><br/><label>Dewey Class. No.: </label>362.3  616.83