Picture exchange communication system (PECS) among special children - Sison, Odette De Vera (2004)
Thesis (M.A. Special Education)--University of the Philippines, Diliman.
Keywords: Communication devices for people with disabilities -- Philippines -- Manila; Developmentally disabled -- Means of communication -- Philippines -- Manila; Autistic children -- Education -- Philippines -- Manila; Children with mental disabilities -- Education -- Philippines -- Manila; Speech disorders in children -- Philippines -- Manila