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ALLAOUI, mohammed elhassen and OUDDANE, Bachir and Tidjani, Chemseddine (2017): The importance of training programs in the improvement of the performance of employees in the petroleum companies"- Case of Sonatrach company - The Regional Directorate of BERKAOUI (Ouargla- Algeria). Published in: Saudi Journal of Business and Management Studies (SJBMS) , Vol. 2, No. 4A (April 2017): pp. 407-414.
