Psychology & communication
| Awdur Corfforaethol: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington, D.C.
Voice of America, United States Information Agency
1974 printing.
|
| Cyfres: | Its Forum series.
|
| Pynciau: |