Rojas-Daporta, Manuel, and Manuel Soldevila. “COMPARISON OF DIFFERENT LEVELS OF CRUDE PROTEIN IN LAYING DIETS”. The Journal of Agriculture of the University of Puerto Rico 60, no. 4 (October 1, 1976): 677–678. Accessed November 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10515.