YLI-HALLA, M. Copper in cultivated soils of Finland. Agricultural and Food Science, [S. l.], v. 3, n. 5, p. 487–495, 1994. DOI: 10.23986/afsci.72721. Disponível em: https://journal.fi/afs/article/view/72721. Acesso em: 21 may. 2024.