Código QR (código de barras bidimensional)

Educational planning, programming, budgeting a systems approach.

Detalhes bibliográficos
Autor principal:	Havelock, Ronald G.
Formato:	Livro
Idioma:	English
Publicado em:	Englewood Cliffs, N. J. Educational Technology Pub. [c1973].
Assuntos:	School management and organization. Educational innovations.