Picture communication symbols

Bibliografiske detaljer
Hovedforfatter:	Johnson, Roxanna Mayer
Format:	Bog
Sprog:	English
Udgivet:	Solana Beach, Calif. Mayer-Johnson c1995.
Udgivelse:	Wordless ed.
Fag:	Nonverbal communication in education. Special education. Self-help devices for people with disabilities. Signs and symbols. Visual communication.