[1]
H. E. P. Martinez, J. F. S. Menezes, R. B. de Souza, V. H. A. Venegas, and P. T. G. Guimarães, “Critical nutrient ranges and evaluation of nutritional status in coffee-tree plantations of Minas Gerais”, PAB, vol. 38, no. 6, pp. 703–713, Jun. 2003.