Irwin, Orvis C. <br/><br/>
Communication variables of cerebral palsied and mentally retarded children 
by Orvis C. Irwin. With a foreword by Dorothea McCarthy. 
 - Springfield, Ill.  C. C. Thomas  [1972] 
 - xxvii, 370 p. 
<br/><br/>Bibliography: p. 359-365. 
<br/><br/><label>ISBN: </label>0398023220 
<br/><br/><label>LCCN: </label>77169883  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cerebral palsied children<br/>Communicative disorders in children
<br/><br/><label>LC Class. No.: </label>RJ496.C4  / I78 
<br/><br/><label>Dewey Class. No.: </label>618.9/28/55