Color (2) Development (2) Specimens (2) Interviews (2) Vision (2) Villages (2) Topographical surveying (2) Samples (Commerce) (2) Plants (2) Perception (2) Peasants (2) Interviewing in journalism (2) Geomorphology (2) Geology (2) Diagnosis, Laboratory (2) Composite materials (2) Cognition (2) Interviews (2) Classification (2) Classification (2) Knowledge and learning (2) Technique (2) Research (2) Texture (2) Soils (2) Quality (2) Harvesting (2) Pueblos (2) Entrevistas (2) Geomorfología (2)
Congo-Kinshasa (1) Instruction and study (1) Testing (1) Adaptation (1) Adventive plants (1) Water (1) Production (Economic theory) (1) Pipe (1) Necessity (Philosophy) (1) Intertropical convergence zone (1) Foreign exchange (1) Food relief (1) Food--Composition (1) Farmers (1) Crop zones (1) Corn (1) Use studies (1) Use studies (1) Management (1) Technique (1) Yields (1) Use (1) Usage (1) Last years (1) Soils (1) Practice (1) Effectiveness (1) Alimentos--Composición (1) Ensayos (Tecnología) (1) Tuberías (1)