Bonnet, J. A., A. R. Riera, and J. Roldán. “Tracing the Mineral from the Soil to the Plant Part V. Effect of Lime and Phosphorus on Guinea, Merker, and Para-Carib Grasses Grown in Association With Tropical Kudzu”. The Journal of Agriculture of the University of Puerto Rico 36, no. 2 (April 1, 1952): 141–154. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12794.