![](/img/cover-not-exists.png)
A Study of the Effectiveness of Audio-Visual Teaching Materials When Prepared According to the Principles of Motivational Research
Jack V. EdlingVolume:
12
Language:
english
Journal:
AV Communication Review
DOI:
10.2307/30228243
Date:
January, 1964
File:
PDF, 303 KB
english, 1964