International training centers on soil fertility and rice breeding.
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Format: | Texto biblioteca |
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1955
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Subjects: | STATE INTERVENTION, WORKERS, TRAINING, TRAINING COURSES, PLANT BREEDING, RICE, SOIL FERTILITY, INTERVENTION DE L'ETAT, TRAVAILLEUR, FORMATION, COURS PROFESSIONNEL, AMELIORATION DES PLANTES, RIZ, FERTILITE DU SOL, INTERVENCION ESTATAL, OBREROS, CAPACITACION, CURSOS DE CAPACITACION, FITOMEJORAMIENTO, ARROZ, FERTILIDAD DEL SUELO, |
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