Cezar, Everson, Marcos Rafael Nanni, Marcelo Luiz Chicati, and Roney Berti Oliveira. 2012. “Employment of GPR in the Study of Soils and Its Correlation With Laboratory Methods”. Semina: Ciências Agrárias 33 (3):979-88. https://doi.org/10.5433/1679-0359.2012v33n3p979.