UNESCO
The economics of new educational media - Paris UNESCO 1980 - 2v.(v.2-315 p.)
Includes bibliography.
Partial contents; v.2-Cost and effectiveness
9231016938
Classroom techniques
371.3 / UNI
The economics of new educational media - Paris UNESCO 1980 - 2v.(v.2-315 p.)
Includes bibliography.
Partial contents; v.2-Cost and effectiveness
9231016938
Classroom techniques
371.3 / UNI