STUDY OF OPTIMUM CONDITIONS FOR REMOVAL OF HEAVY METAL ELEMENTS BY LOCALLY ISOLATED FUNGI Aspergillus niger.: STUDY OF OPTIMUM CONDITIONS FOR REMOVAL OF HEAVY METAL ELEMENTS BY LOCALLY ISOLATED FUNGI Aspergillus niger. IJMRCP. 2017;9(1):13-20. Accessed January 4, 2026. https://jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/36