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 [Internet]. 2017 Feb. 5 [cited 2024 May 3];9(1):13-20. Available from: https://jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/36