Pérez López, Agripino. “Effect of Planting Distance and Fertilizer Level on the Mineral Content of the Leaf of Two Varieties of Carica Papaya L”. The Journal of Agriculture of the University of Puerto Rico 66, no. 4 (October 1, 1982): 286–292. Accessed December 23, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/7678.