COMPARATIVE EXTRACTION OF Mn AND Pb USING EDTA AND CITRATE TO ASSESS THEIR MOBILITY FROM TWO DUMP SITES IN ZARIA METROPOLIS. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 5, n. 3, p. 9–17, 2021. DOI: 10.33003/fjs-2021-0503-737. Disponível em: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/737. Acesso em: 11 sep. 2025.