Irwin, Orvis C.  1891- <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.  24 cm. 
<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>618.92836 IRW