KORKMAN, J. Sulphur status in Finnish cultivated soils. Agricultural and Food Science, [S. l.], v. 45, n. 2, p. 121–215, 1973. DOI: 10.23986/afsci.72939. Disponível em: https://journal.fi/afs/article/view/72939. Acesso em: 25 dec. 2024.