NWAJEI, G. E. HEAVY METAL CONCENTRATION IN MARINE SEDIMENTS AND VEGETATION ( CALTHA PALUSTRVIS ) FROM RIVER RAMOS IN BAYELSA AND DELTA STATES OF NIGERIA. Biological Sciences - PJSIR, [S. l.], v. 45, n. 2, p. 111–113, 2002. Disponível em: https://v2.pjsir.org/index.php/biological-sciences/article/view/1765. Acesso em: 24 nov. 2024.