KAILA, A. Fixation of ammonium in Finnish soils. Agricultural and Food Science, [S. l.], v. 34, n. 1, p. 107–114, 1962. DOI: 10.23986/afsci.71572. Disponível em: https://journal.fi/afs/article/view/71572. Acesso em: 22 nov. 2024.