Contents_2 Emad Ali Ahmed south valley university Abstract Journal of South Valley University for Environmental Researches (JSVUER); Vol. 2; No. 1; May 2019 pdf (English) Veröffentlicht 2019-05-30 Ausgabe Bd. 2 Nr. 1 (2019): Journal of South Valley University for Environmental Researches (JSVUER); Vol. 2; No. 1; May 2019 Rubrik Articles