TY  - BOOK
ED  - International Institute for Educational Planning.
TI  - The planning and management of audio-visual media in distance learni ng institutions : : final report of an IIEP workshop, Paris, 30 Septem ber -3 October 1980 / 
PY  - 1981///
CY  - Paris : 
PB  - UNESCO , 
KW  - Distance  education
KW  - Audio-visual aids
ER  -