Morales Rosales, Edgar J. “Resource Use Efficiency in the Biomass Production and Seed Yield of the Combined System Sunflower – Common Bean As Affected by Nitrogen”. REVISTA TERRA LATINOAMERICANA 25, no. 4 (December 1, 2007): 373–381. Accessed December 26, 2024. https://terralatinoamericana.org.mx/index.php/terra/article/view/1391.