Sotomayor-Ramírez, D., González-Vélez, A., & Román-Paoli, E. (2003). Yam (Dioscorea spp.) response to fertilization in soils of the semiarid southern coast of Puerto Rico. The Journal of Agriculture of the University of Puerto Rico, 87(3-4), 91–103. https://doi.org/10.46429/jaupr.v87i3-4.1101