BONNET, Juan A. Influence of Varieties and Seasons upon the Mineral Nutrient Levels, of Coffee Leaves from Puerto Rico. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 53, n. 3, p. 177–186, 1969. DOI: 10.46429/jaupr.v53i3.11156. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/11156. Acesso em: 26 apr. 2024.