Director-General's inaugural address at the first session (of International Commission for the Study of Communication Problems).
Director-General's inaugural address at the first session (of International Commission for the Study of Communication Problems).
- París : UNESCO,
- 8 P.
- International Commission for the Study of Communication Proceso .
659.3 (100) =20 DIR No.4.
659.3 (100) =20 DIR No.4.