Contents_2 Emad Ali Ahmed south valley university الملخص Journal of South Valley University for Environmental Researches (JSVUER); Vol. 2; No. 1; May 2019 pdf (English) منشور 2019-05-30 إصدار مجلد 2 عدد 1 (2019): Journal of South Valley University for Environmental Researches (JSVUER); Vol. 2; No. 1; May 2019 القسم Articles