Código QR (código de barras bidimensional)

Picture communication symbols

Detalhes bibliográficos
Autor principal:	Johnson, Roxanna Mayer
Formato:	Livro
Idioma:	English
Publicado em:	Solana Beach, Calif. Mayer-Johnson c1995.
Edição:	Wordless ed.
Assuntos:	Nonverbal communication in education. Special education. Self-help devices for people with disabilities. Signs and symbols. Visual communication.