Cibes, Héctor R., and Socorro Gaztambide. “Mineral-Deficiency Symptoms Displayed by Rice Plants Grown Under Controlled Conditions in the Greenhouse”. The Journal of Agriculture of the University of Puerto Rico 64, no. 4 (October 1, 1980): 369–378. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10182.