de León, D., L. Ritchie, and J. Chiriboga. 1971. “REFRACTIVENESS OF PHYSA CUBENSIS (PFEIFFER) AND APPLEXA MARMORATA (GUILDING) TO FASCIOLA HEPATICA (L.)”. The Journal of Agriculture of the University of Puerto Rico 55 (2):267-70. https://doi.org/10.46429/jaupr.v55i2.11055.