Orlandi, Radamee, and Fernando E. Armstrong. “Sodium Fluoride As an Ascaricide for Swine Raised on the Ground”. The Journal of Agriculture of the University of Puerto Rico 31, no. 2 (April 1, 1947): 190–202. Accessed July 17, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12846.