Yassin, Atif,, Babiker, S., AND Abdel-Rahim, Awad,. " Some Physicochemical Properties of Essential Oil Extracted from Cymbopogon Schoenanthus (L.) Spreng (Poaceae) by Steam Distillation" Gezira Journal of Engineering and Applied Sciences [Online], Volume 12 Number 2 (9 July 2018)