“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”. 2017. Iraqi Journal of Market Research and Consumer Protection 9 (1): 13-20. https://jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/36.