The world of difference international distribution of information
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Paris
Unesco Press
[1983n].
|
| Cyfres: | Communication and society
no. 15 |
| Pynciau: |