NGUMAH, C.; ORJI, J.; AKUBUOKWUOMA, J.; ANOLIEFOH, U. Impacts of different concentrations of Copper and Zinc on in vitro responses of Azotobacter chroococum in biomass and nitrogen fixing outputs. Ecotoxicology and Environmental Contamination, [S. l.], v. 13, n. 1, p. 79–83, 2019. DOI: 10.5132/eec.2018.01.09. Disponível em: https://periodicos.univali.br/index.php/eec/article/view/12679. Acesso em: 5 may. 2024.