[1]
Neptune, A., Tabatabai, M. e Hanway, J. 1974. Sulfur fractions and carbon-nitrogen-phosphorus-sulfur relationships in some Brazilian and Iowa soils . Anais da Escola Superior de Agricultura Luiz de Queiroz. 31, (jan. 1974), 605-619. DOI:https://doi.org/10.1590/S0071-12761974000100047.