puits (1) enquête (1) recherche (1) mesure (méthode analytique) (1) champ (1) évolution (1) éducation (1) Sud (1) Education (1) Feeding and feeds (1) Propagation (1) Variation (1) Methods (1) Wealth (1) Value (1) Standardization (1) Research (1) Millets (1) Measurement (1) Manufacturers' agents (1) Investigations (1) Grain (1) Evolution (1) Evaluation (1) Education (1) Culture (1) Corn (1) Commission merchants (1) College students (1) Botany (1)