Sulfur fractions and carbon-nitrogen-phosphorus-sulfur relationships in some Brazilian and Iowa soils . Anais da Escola Superior de Agricultura Luiz de Queiroz, [S. l.], v. 31, p. 605–619, 1974. DOI: 10.1590/S0071-12761974000100047. Disponível em: https://revistas.usp.br/aesalq/article/view/39066.. Acesso em: 4 maio. 2024.