Control (2) Nineteen sixties (2) Stone (2) Irrigation (2) Riego (2) Pierre (2) Irrigation (2) Années 1960 (2) Années 1960 (2) Lutte contre (2) Pierre (2) Sahel (2) Irrigation (2) irrigation (2) roche (2) Zone sahélienne (2) Burkina Faso (2) Lyon (1) Centre (1) Dynamics (1) Colonization (1) Development (1) Adaptation (1) Wrestling (1) Wheat (1) Villages (1) Valleys (1) Truck farming (1) Rice (1) Reason (1)