MILLER, GODSON UGWECHI ; NWALA, LONGINUS  . IMPACT OF SAND MINING ON THE HEAVY METAL CONCENTRATION, IN ISIODU-EMOHUA NEW CALABAR RIVER, RIVERS STATE. BW Academic Journal, [S. l.], 2026. Disponível em: https://bwjournal.org/index.php/bsjournal/article/view/4389. Acesso em: 28 sep. 2026.