[1]
Irizarry, H. and Rivera, E. 1993. Yield of two yam (Dioscorea alata) cultivars with three planting dates and two planting systems. The Journal of Agriculture of the University of Puerto Rico. 77, 3-4 (Oct. 1993), 161–166. DOI:https://doi.org/10.46429/jaupr.v77i3-4.4204.