Audio-visual techniques for industry
| Prif Awdur: | |
|---|---|
| Awdur Corfforaethol: | |
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
United Nations
1978.
|
| Cyfres: | Development and transfer of technology series
no. 6. |
| Pynciau: |