Ortegón, Alfredo, and Artemio Escobedo. “Genetic and Phenotypic Variability and Correlations Between Yield Components of Sunflower (Helianthus Annuus) Lines”. Agronomía Mesoamericana 6 (June 2, 2016): 151–156. Accessed April 26, 2024. https://revistas.ucr.ac.cr/index.php/agromeso/article/view/24823.