de León, D. and Fernández-Van Cleve, J. (1984) “EFFICACY OF MK-401 (4-AMINO-6 TRICHLOROETHENYL-1,3 BENZENEDISULFONMIDE) AGAINST FASCIOLA HEPATICA INARTIFICIALLY INFECTED CALVES”, The Journal of Agriculture of the University of Puerto Rico, 68(4), pp. 479–481. doi: 10.46429/jaupr.v68i4.7318.