Acuña, Oscar, Emigdio Rodríguez, Aurelio Llano, Vilma Ruth Calderón, Guillermo Flores, Abelardo Viana, and Rogelio Lépiz. 2006. “Technical Evaluation of Inoculants in Common Bean With Efficient Rhizobium Strains in Nitrogen Fixation in Central America”. Agronomía Mesoamericana 12 (1):25-32. https://doi.org/10.15517/am.v12i1.17243.