Function and training of the extension worker in plant protection in developing countries.
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| Format: | Texto biblioteca |
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1969
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| Subjects: | DEVELOPING COUNTRIES, PLANT PROTECTION, ADVISORY OFFICERS, TRAINING, EDUCATION, PAYS EN DEVELOPPEMENT, PROTECTION DES PLANTES, CONSEILLER AGRICOLE, FORMATION, PAISES EN DESARROLLO, PROTECCION DE LAS PLANTAS, AGENTES DE EXTENSION, CAPACITACION, EDUCACION, |
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