Rodrigues de Souza J. A.; Moreira D. A.; Batista R. O.; Osorio Saraz J. A.; Zapata MarĂ­n O. L. Chemical alterations in soils fertirrigated with wastewater from swine facilities. Revista Colombiana de Ciencias Pecuarias, v. 25, n. 3, p. 360-368, 19 Sep. 2012.