Salem R, bouzebda naima. Online education as a mechanism to support the learning service in algerian universities during the covid 19 virus -A sample from the department of economics, El Tarf university-: تاريخ الاستلام:10/11/2020 تاريخ القبول:04/05/2023. RDRH [Internet]. 2023 May 31 [cited 2026 Nov. 2];18(01):167-86. Available from: https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/137