PESSI, Y.; SYVÄLAHTI, J.; LESKELÄ, A.; YLÄNEN, M. Fertilizing experiments with anhydrous ammonia at Kotkaniemi. Agricultural and Food Science, [S. l.], v. 43, n. 4, p. 213–219, 1971. DOI: 10.23986/afsci.71800. Disponível em: https://journal.fi/afs/article/view/71800. Acesso em: 22 jul. 2024.