BRUMMER, V.; AURA, E. Effect of residual nitrogen and fertilizer nitrogen on sugar beet production in Finland . Agricultural and Food Science, [S. l.], v. 46, n. 3, p. 143–155, 1974. DOI: 10.23986/afsci.71890. Disponível em: https://journal.fi/afs/article/view/71890. Acesso em: 19 apr. 2024.