Notions (Philosophy) (2) Water (2) Life sciences (2) Concepts (2) Use studies (2) Use studies (2) Rates (2) Conceptos (2) Eau (2) Tarifs (2) Utilisation (2) Sciences de la vie (2) Concept (2) Eau (2) place (2) pouvoir (2) eau (2) Causes (1) Assaying (1) Agriculture (1) Communication (1) Platforms (1) Rules (1) Rules (1) Platforms (1) Nineteen nineties (1) Mark, German (1) Water resources development (1) Groundwater (1) Tools (1)