Lugo-López, M.A. 1969. Prediction of the Erosiveness of Puerto Rican Soils on a Basis of the Percentage of Particles of Silt and Clay When Aggregated. The Journal of Agriculture of the University of Puerto Rico. 53, 3 (Jul. 1969), 187–190. DOI:https://doi.org/10.46429/jaupr.v53i3.11157.