Picture communication symbols

Opis bibliograficzny
1. autor:	Johnson, Roxanna Mayer
Format:	Książka
Język:	English
Wydane:	Solana Beach, Calif. Mayer-Johnson c1995.
Wydanie:	Wordless ed.
Hasła przedmiotowe:	Nonverbal communication in education. Special education. Self-help devices for people with disabilities. Signs and symbols. Visual communication.