HEINONEN-TANSKI, H. Conventional and organic cropping systems at Suitia III: Microbial activity in soils. Agricultural and Food Science, [S. l.], v. 62, n. 4, p. 321–330, 1990. DOI: 10.23986/afsci.72906. Disponível em: https://journal.fi/afs/article/view/72906. Acesso em: 17 jul. 2024.