New techniques in communication
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| Format: | Texto biblioteca |
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1970
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| Subjects: | AUDIOVISUAL AIDS, RADIO, AGRICULTURE, EXTENSION ACTIVITIES, TEACHING MATERIALS, TEACHING METHODS, DIFFUSION OF INFORMATION, AGRICULTURAL DEVELOPMENT, EDUCATION, MOYEN AUDIOVISUEL, VULGARISATION, MATERIEL PEDAGOGIQUE, METHODE PEDAGOGIQUE, DIFFUSION DE L'INFORMATION, MEDIOS AUDIOVISUALES, RADIO (MEDIO DE COMUNICACION), AGRICULTURA, EXTENSION, MATERIALES DE ENSENANZA, METODOS PEDAGOGICOS, DIFUSION DE INFORMACION, DEVELOPPEMENT AGRICOLE, DESARROLLO AGRICOLA, EDUCACION, |
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