Samuels, George. “INFLUENCE OF WATER EXCESS OR DEFICIENCY ON LEAF NUTRIENT CONTENT AND PLANT GROWTH IN SUGARCANE AND OTHER CROPS”. The Journal of Agriculture of the University of Puerto Rico 56, no. 1 (January 1, 1972): 81–84. Accessed November 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10891.