Godinho, V. de P.C. et al. 1997. Phosphate adsorption in three soils of the Rio Grande do Norte semiarid region. Pesquisa Agropecuaria Brasileira. 32, 8 (Aug. 1997), 819–823. DOI:https://doi.org/10.1590/S1678-3921.pab1997.v32.4727.