Chao de Báez, C., and M. R. Goyal. “CLASS A PAN EVAPORATION VERSUS POTENTIAL EVAPOTRANSPIRATION AT SEVEN LOCATIONS IN PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico, vol. 74, no. 3, July 1990, pp. 343-6, doi:10.46429/jaupr.v74i3.6673.