Development (1) Notions (Philosophy) (1) World War, 1939-1945 (1) Volume (Cubic content) (1) Scientists (1) Science (1) Nature (1) Ideology (1) Goal (Psychology) (1) Geographers (1) Experience (1) Culture (1) Concrete (Philosophy) (1) Concepts (1) Technological innovations (1) Processing (1) Irrigation (1) Effectiveness (1) Guerra mundial, 1939-1945 (1) Conceptos (1) Experiencia (1) Ideología (1) Riego (1) Bassin (1) Plan (1) Nature (1) Lac (1) Irrigation (1) Idéologie (1) Société (1)