Educational technology in the third world a general systems perspective
| Autor principal: | |
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| Format: | Llibre |
| Idioma: | English |
| Publicat: |
Ithaca, N. Y.
Department of Communication Arts, Graduate Teaching and Research Center, Cornell Univ.
c1974n
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| Col·lecció: | Papers in communication
no.9 |
| Matèries: |