Zapata, M., Wilkinson, R., Freytag, G. F., Vélez, H., Ortiz, F. H. and López-Rosa, J. H. (1991) “Incorporating resistance to Xanthomonas campestris pv, phaseoli into bean using the latent period as a resistance marker”, The Journal of Agriculture of the University of Puerto Rico, 75(4), pp. 345–352. doi: 10.46429/jaupr.v75i4.3620.