Non-vocal communication techniques and aids for the severely physically handicapped : based upon transcriptions of the 1975 Trace Center national workshop series on non-vocal communication techniques and aids (ouvrira une nouvelle fenêtre)Sauvegarder cet élément : Non-vocal communication techniques and aids for the severely physically handicapped : based upon transcriptions of the 1975 Trace Center national workshop series on non-vocal communication techniques and aidshttps://catalogue-scientifique.canada.ca/record=1066845~S6*frcRechercher McDonald, Eugene T; Rechercher Vanderheiden, Gregg C; Rechercher Grilley, KateUniversity Park Press, 1976Actes de conférence