Cibes, H. R., & Adsuar, J. (1966). Effects of Chlorethanol and Thiourea on the Germination and Relative Yield of the Yam (Dioscorea alata) L. The Journal of Agriculture of the University of Puerto Rico, 50(3), 201–208. https://doi.org/10.46429/jaupr.v50i3.3457