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 October 9, 2025. https://www.jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/36