Mohammed، B. (2017). Environmental Management in Algerian Economic Enterprise from Staff Point of View of Cement Corporation Ain El Kbira, Setif. مجلة الباحث الاجتماعي، ع13 ، 17 - 25. مسترجع من http://search.mandumah.com/Record/1129816
Mohammed، Bouaoune. "Environmental Management in Algerian Economic Enterprise From Staff Point of View of Cement Corporation Ain El Kbira, Setif." مجلة الباحث الاجتماعي ع13 (2017): 17 - 25. مسترجع من http://search.mandumah.com/Record/1129816