Vasconcelos, I.; Almeida, R. T. de; Landim, C. M. Strain Collection of Rhizobium Spp. Isolated from Arboreus Legumes in the State of Ceará, Brazil. PAB 2014, 19 (13), 181-183. https://doi.org/10.1590/S1678-3921.pab1984.v19.17522.