SALO, T.; LEMOLA, R.; ESALA, M. National and regional net nitrogen balances in Finland in 1990 2005. Agricultural and Food Science, [S. l.], v. 16, n. 4, p. 366–375, 2007. DOI: 10.2137/145960607784125384. Disponível em: https://journal.fi/afs/article/view/5891. Acesso em: 4 may. 2024.