Martin, F.W. and Delpín, H. 1967. The influence of Some Soil and Climatic Factors on Sapogenin Yields of Dioscorea. The Journal of Agriculture of the University of Puerto Rico. 51, 3 (Jul. 1967), 260–265. DOI:https://doi.org/10.46429/jaupr.v51i3.11241.