ERVIÖ, R. Kyrönjoen vesistöalueen rikkipitoiset viljelysmaat . Agricultural and Food Science, [S. l.], v. 47, n. 6, p. 550–561, 1975. DOI: 10.23986/afsci.71855. Disponível em: https://journal.fi/afs/article/view/71855. Acesso em: 29 jun. 2024.