Stamford, Newton Pereira, Carolina Etiene de Rosália e Silva Santos, Rui Medeiros, and Ana Dolores Santiago de Freitas. 1999. “Effect of Phosphorus, Potassium and Magnesium Fertilization on Yam Bean Inoculated With Bradyrhizobium and Growing in an Alic Latosol Soil”. Pesquisa Agropecuaria Brasileira 34 (10): 1831-38. https://doi.org/10.1590/S1678-3921.pab1999.v34.5513.