OFOEGBU, Wilson Chukwuemeka, EFEH, Valentine Omorse. Production Improvement Function and Operational Performance of Nigerian Refineries. EJHSS [Internet]. 2022 Sep. 22 [cited 2024 Nov. 14];12:24-38. Available from: https://geniusjournals.org/index.php/ejhss/article/view/5715