Lugo-López, M. A., Badillo-Feliciano, J., & Calduch, L. (1977). Response of Native White Beans, Phaseolus vulgaris, to Various N Levels in an Oxisol. The Journal of Agriculture of the University of Puerto Rico, 61(4), 438–442. https://doi.org/10.46429/jaupr.v61i4.10406