Educational technology in the third world a general systems perspective
| Autore principale: | |
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| Natura: | Libro |
| Lingua: | English |
| Pubblicazione: |
Ithaca, N. Y.
Department of Communication Arts, Graduate Teaching and Research Center, Cornell Univ.
c1974n
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| Serie: | Papers in communication
no.9 |
| Soggetti: |