López-Matos, L. “Effect of Soil Preparation of Tobacco Seedbeds on the Use of Methyl Bromide As Soil Fumigant”. The Journal of Agriculture of the University of Puerto Rico 50, no. 2 (April 1, 1966): 87–91. Accessed May 2, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/3717.