Picture communication symbols

Bibliografische gegevens
Hoofdauteur:	Johnson, Roxanna Mayer
Formaat:	Boek
Taal:	English
Gepubliceerd in:	Solana Beach, Calif. Mayer-Johnson c1995.
Editie:	Wordless ed.
Onderwerpen:	Nonverbal communication in education. Special education. Self-help devices for people with disabilities. Signs and symbols. Visual communication.