International studies of national speech education systems.
| Awdur Corfforaethol: | |
|---|---|
| Awduron Eraill: | , |
| Fformat: | Llyfr |
| Iaith: | Saesneg |
| Cyhoeddwyd: |
Minneapolis
Burgess Pub. in cooperation with the Pacific Speech Association
[1970-
|
| Pynciau: |


