de León, D., J. Chiriboga, D. Parra, and M. Llavona. 1975. “DIFFERENTIAL DIAGNOSIS OF INFECTION BY FASCIOLA HEPATICA AND COTYLOPHORON COTYLOPHORUM IN CATTLE AND SNAIL HOSTS”. The Journal of Agriculture of the University of Puerto Rico 59 (2):129-32. https://doi.org/10.46429/jaupr.v59i2.10619.