ÅSTRÖM, M.; SUNDSTRÖM, R.; HOLMBERG, M. pH of streams in western Finland - a perspective from the Middle Ages into the mid 21st century. Agricultural and Food Science, [S. l.], v. 14, n. 1, p. 5–13, 2005. DOI: 10.2137/1459606054224183. Disponível em: https://journal.fi/afs/article/view/5791. Acesso em: 7 may. 2024.