Non-vocal communication techniques and aids for the severely physically handi ; capped 
based upon transcriptions of the 1975 Trace Center national workshop series on non-vocal communication techniques and aids / Eugene T. McDonald ... et al. ; edited by Gregg C. Vanderheiden, Kate Grilley ; art editor, Jana Fothergill 
 - University Park Press :  Baltimore,  1975 
 - xv, 227 p. :  ill. ;  28 cm. 
<br/><br/>Bibliography: p. 221-227. 
<br/><br/><label>ISBN: </label>0839109520 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communicative disorders in children--Congresses<br/>Physically handicapped children--Language--Congresses<br/>Communication devices for the disabled--Congresses<br/>Pasigraphy--Congresses