HAGNER, M.; PASANEN, T.; LINDQVIST, B. Effects of birch tar oils on soil organisms and plants. Agricultural and Food Science, [S. l.], v. 19, n. 1, p. 13–23, 2010. DOI: 10.2137/145960610791015096. Disponível em: https://journal.fi/afs/article/view/5970. Acesso em: 17 aug. 2024.