Ortiz-Torres, Enrique. “DAMAGE CAUSED BY THE SNAIL, MARISA CORNUARIETIS, TO YOUNG RICE SEEDLINGS IN PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico 46, no. 3 (July 1, 1962): 241–242. Accessed April 24, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12342.