Alers-Alers S, Orengo-Santiago E, Cruz Pérez L. The Influence of Various N-P-K Fertilizer Levels on Onion Production in Southern Puerto Rico. JAUPR [Internet]. 1979 Apr. 1 [cited 2024 Apr. 25];63(2):111-5. Available from: https://revistas.upr.edu/index.php/jaupr/article/view/10268