Souza, C. A. de; Reis Junior, F. B. dos; Mendes, I. de C.; Lemainski, J.; Silva, J. E. da. Sewage Sludge Effects on Soil Biological Parameters and on Soybean Nodulation and Yield. PAB 2010, 44 (10), 1319-1327. https://doi.org/10.1590/S1678-3921.pab2009.v44.2290.