gestion de l'eau (1) temps (durée) (1) science (1) productivité (1) politique (1) gestion (1) irrigation (1) hydrologie (1) eaux souterraines (1) Will (1) Weights and measures (1) Watersheds (1) Groundwater (1) Water (1) Time (1) Social sciences (1) Sharing (1) Science (1) Scarcity (1) Promises (1) Play (1) Persons (1) Performance (1) Paradoxes (1) Management (1) Human beings (1) Irrigation efficiency (1) Irrigation (1) Hydrology (1) Farmers (1)