Pereira, João Carlos, Caio Vidor, Paulo Emílio Lovato, and Alberto de Figueiredo Penteado. 1991. “Efficiency and Competitiveness of Rhizobium Leguminosarum Bv. Phaseoli Strains in Field Beans”. Pesquisa Agropecuaria Brasileira 26 (7): 1073-80. https://doi.org/10.1590/S1678-3921.pab1991.v26.3441.