OGAJI, F. M.; ONWUALU-JOHN, J. N. Environmental Geochemical Assessment of Air Quality in Areas Influenced by Petroleum Activities. European Journal of Applied Sciences, [S. l.], v. 14, n. 05, p. 109–114, 2026. DOI: 10.14738/ejas.1405.12158. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/12158. Acesso em: 18 sep. 2026.