SAMUELS, G.; BONETA-GARCÍA, E. G.; GONZÁLEZ-VÉLEZ, F. A Comparison of Phosphate Fertilizers for Tobacco. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 46, n. 1, p. 48–54, 1962. DOI: 10.46429/jaupr.v46i1.12293. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/12293. Acesso em: 7 dec. 2022.