TWAIJ, B. A. Correlation of TSB and Urea with Pb, Na and Mg in Workers of Fuel Station. Journal of Petroleum Research and Studies, [S. l.], v. 16, n. 3, p. 149-160, 2026. DOI: 10.52716/jprs.v16i3.1061. Disponível em: https://www.jprs.gov.iq/index.php/jprs/article/view/1061. Acesso em: 22 sep. 2026.