PÉREZ ESCOLAR, R.; LUGO LÓPEZ, M. A. Influence of Degree of Clay-Mineral Crystallization and Free Iron Oxide Content on the Cation Exchange Capacity of Catalina and Cialitos Soils. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 52, n. 2, p. 148–154, 1968. DOI: 10.46429/jaupr.v52i2.11500. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/11500. Acesso em: 8 dec. 2022.