Soil erosion and conservationde S. A. El-Swaify, William C. MoldenhauerMateriasÉrosionSoil conservationCongrèsSediment controlContrôleConservationSoil erosionCongressesSolsSédiments (Géologie)
DDryland management alternatives and research needs for AlfisDryland management alternatives and research needs for Alfisols in the semi-arid tropics