Lugo-López, M. A., Raúl Pérez-Escolar, and Reinaldo del Valle. “WINGED BEANS AS A POTENTIAL FOOD AND GREEN MANURE CROP UNDER CONDITIONS IN PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico 65, no. 1 (January 1, 1981): 75–78. Accessed April 19, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/7567.