KOZIEŁ, M.; MARTYNIUK, S.; SIEBIELEC, G. Occurrence of Azotobacter spp. in cultivated soils in Poland. Polish Journal of Agronomy, [S. l.], v. 44, n. 44, p. 3–8, 2021. DOI: 10.26114/pja.iung.447.2021.44.01. Disponível em: https://journals.iung.pl/index.php/pja/article/view/112. Acesso em: 7 lis. 2024.