Andrews, John S., Carlos M. Muñiz, and Felix Orihuela. “PRELIMINARY NOTE ON THE ADMINISTRATION OF NON-CONDITIONED PHENOTHIAZINE, IN SMALL DAILY DOSES, FOR THE CONTROL OF GASTROINTESTINAL PARASITES OF CATTLE IN PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico 27, no. 3 (July 1, 1943): 125–130. Accessed April 28, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12886.