Zapata, M. (1985). Effect of Pure and Mixed Suspensions of Virulent and Heterologous Isolates of Xanthomonas campestris on the Infectivity of the Inoculum on Two Species of Phaseolus. The Journal of Agriculture of the University of Puerto Rico, 69(2), 191–199. https://doi.org/10.46429/jaupr.v69i2.7343