publicações Aggregates and water dispersible clay in Oxisols from Southern Brazil Documento Mechanical effects of incorporated residues and mulch on soil erosion by water Documento Silicate and iron oxide mineralogy of major soils of southern Indiana, USA. Documento The effect of tillage on the nature and properties of humic substances Documento Universal Soil Loss Equation (USLE), runoff erosivity factor, slope steepness and slope length exponent Documento