TY  - BOOK
TI  - The multilateral exchange of educational audio-visual materials: : existing mechanisms and suggestions for the future
SN  - 9231016948
U1  - 371.33 
PY  - 1980///
CY  - Paris
PB  - Unesco
KW  - Audiovisual education
KW  - Audiovisual meterials
N1  - PB
ER  -