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

Bibliografiske detaljer
Hovedforfatter:	Gropper, George L.
Andre forfattere:	Glasgow, Zita
Format:	Bog
Sprog:	English
Udgivet:	Englewood Cliffs, NJ Educational Technology c1971.
Fag:	Visual aids. Audio-visual materials. Teaching > Aids and devices.