Román-Paoli, Elvin, and David Sotomayor-Ramírez. “Soil Conditioner Efficacy on Lajas Valley Sweet Corn Production”. The Journal of Agriculture of the University of Puerto Rico 88, no. 3-4 (July 1, 2004): 97-108. Accessed October 28, 2021. https://revistas.upr.edu/index.php/jaupr/article/view/1090.