Beaver, James S., Emmanuel H. Prophete, Juan Carlos Rosas, Graciela Godoy Lutz, James R. Steadman, and Timothy G. Porch. “RELEASE OF ’XRAV-40-4’BLACK BEAN (PHASEOLUS VULGARIS L.) CULTIVAR”. The Journal of Agriculture of the University of Puerto Rico 98, no. 1 (January 1, 2014): 83–87. Accessed April 27, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/224.