Educational technology in the third world a general systems perspective
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Ithaca, N. Y.
Department of Communication Arts, Graduate Teaching and Research Center, Cornell Univ.
c1974n
|
| Cyfres: | Papers in communication
no.9 |
| Pynciau: |