de León, Delfín, and Rubén Quiñones. “THE EFFICACY OF MK-401 (4-AMINO-6 TRICHLOROETHENYL-1,3-BENZENEDISULFONOMIDE) AGAINT FASCIOLA HEPATICA IN CATTLE UNDER PUERTO RICAN CONDITIONS”. The Journal of Agriculture of the University of Puerto Rico 67, no. 1 (January 1, 1983): 53–55. Accessed April 26, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/7691.