BONNET, Juan Amedee. PHOSPHORIC ACID AND SILICA OF PUERTO RICO SOILS. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 24, n. 4, p. 142–150, 1940. DOI: 10.46429/jaupr.v24i4.13603. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/13603. Acesso em: 1 jul. 2024.