Abdel Daim, Zeinab, 		Abdel-Rahim, Awad, AND 		Ahmed, Abdulwahab.
" Enumeration of Coliform Bacteria and E. coli Contaminating the Drinking Water of Al Gedarif City" <em>Gezira Journal of Engineering and Applied Sciences</em> [Online], Volume 5 Number 1 (7 July 2018)