Gasmelseed, N., & Babiker, A. (2008). DISTRIBUTION OF FRESHWATER SNAILS WITH SPECIAL REFERENCE TO SCHISTOSOMIASIS INTERMEDIATE HOST IN EL-GENAID SUGAR CANE FARM, CENTRAL SUDAN. Gezira Journal Of Health Sciences, 4(1). Retrieved from http://journals.uofg.edu.sd/index.php/gjhs/article/view/222