Picture communication symbols

Dades bibliogràfiques
Autor principal:	Johnson, Roxanna Mayer
Format:	Llibre
Idioma:	English
Publicat:	Solana Beach, Calif. Mayer-Johnson c1995.
Edició:	Wordless ed.
Matèries:	Nonverbal communication in education. Special education. Self-help devices for people with disabilities. Signs and symbols. Visual communication.