Criteria for the selection and use of visuals in instruction a handbook

Dades bibliogràfiques
Autor principal:	Gropper, George L.
Altres autors:	Glasgow, Zita
Format:	Llibre
Idioma:	English
Publicat:	Englewood Cliffs, NJ Educational Technology c1971.
Matèries:	Visual aids. Audio-visual materials. Teaching > Aids and devices.