The Economics of new educational media :
The Economics of new educational media : Present status of research and trends /
- Paris : Unesco, 1977..
- 200 p. : ill. ; 24 cm.
- Educational methods and techniques ; .
Includes bibliographical references and index.
92-3101423-4
371.3078 UNE
Includes bibliographical references and index.
92-3101423-4
371.3078 UNE