ASUQUO, F.; UDOH, J. Patterns of total hydrocarbon, copper and iron in some fish from Cross River Estuary, Nigeria. West African Journal of Applied Ecology, [S. l.], v. 3, n. 1, 2009. DOI: 10.4314/wajae.v3i1.45580. Disponível em: https://www.ajol.info/index.php/wajae/article/view/45580. Acesso em: 2 oct. 2026.