Roberto Vial Costa, Alexandre Christófaro Silva, José Domingos Fabris, Maurício Soares Barbosa, Uidemar Morais Barral and Daniela Alves de Oliveira Vial 2018. Iron-bearing minerals and natural fertility of magnetic soils of Jequitinhonha Valley, Minas Gerais State, Brazil. Brazilian Journal of Agricultural Sciences. 13, 2 (Jun. 2018), 1-10. DOI:https://doi.org/10.5039/agraria.v13i2a5517.