GZAR, D. H. A.; GATEA, I. M. Batch and Column Extraction of Lead from Al-Doura Oil Refinery Soil. Journal of Petroleum Research and Studies, [S. l.], v. 7, n. 1, p. 118-142, 2017. DOI: 10.52716/jprs.v7i1.168. Disponível em: https://jprs.gov.iq/index.php/jprs/article/view/168. Acesso em: 28 sep. 2022.