Álvarez-Solís, J. D. “Organic Amendments and Soil Metabolic Activity in Corn Yield”. REVISTA TERRA LATINOAMERICANA 28, no. 3 (September 1, 2010): 239–245. Accessed April 2, 2026. https://www.terralatinoamericana.org.mx/index.php/terra/article/view/1230.