Abdel Daim, Zeinab, 		Abdel-Rahim, Awad, AND 		Ahmed, Abdulwahab.
" Isolation, Identification and Distribution of Gram Negative Bacterial Isolates Contaminating the Drinking Water of Al Gedarif City" <em>Gezira Journal of Engineering and Applied Sciences</em> [Online], Volume 6 Number 2 (7 July 2018)