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. Ecotoxicol. Environ. Contam. [Internet]. 2019 May 10 [cited 2024 Nov. 23];13(1):79-83. Available from: https://periodicos.univali.br/index.php/eec/article/view/12679