Liu, Lii-Chyuan, José J. Green-Ortiz, and Edwin Acevedo. “Herbicide Screening Trials on Yams (Dioscorea sp.)”. The Journal of Agriculture of the University of Puerto Rico 65, no. 4 (October 1, 1981): 353–360. Accessed November 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/7614.