Alers-Alers, Severiano, and Essau Orengo-Santiago. “LACK OF RESPONSE OF SWEET PEPPERS TOP LEVELS, P PLACEMENT, AND TIMING OF N APPLICATION IN SOUTHERN PUERTO RICO”. The Journal of Agriculture of the University of Puerto Rico 61, no. 3 (July 1, 1977): 389–391. Accessed November 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10439.