SILLANPÄÄ, M. Trace elements in Finnish soils as related to soil texture and organic matter content. Agricultural and Food Science, [S. l.], v. 34, n. 1, p. 34–40, 1962. DOI: 10.23986/afsci.71587. Disponível em: https://journal.fi/afs/article/view/71587. Acesso em: 22 nov. 2024.