Picture communication symbols

Bibliografiska uppgifter
Huvudupphovsman:	Johnson, Roxanna Mayer
Materialtyp:	Bok
Språk:	English
Publicerad:	Solana Beach, Calif. Mayer-Johnson c1995.
Upplaga:	Wordless ed.
Ämnen:	Nonverbal communication in education. Special education. Self-help devices for people with disabilities. Signs and symbols. Visual communication.