Iliyasu, A. M., Mohammed, A., Da’u, S. S., Umar, G., Umbugus, A., & Ahmadu, J. (2019). Evaluation of the Variation in the Level of Compliance of Kaduna Refinery and Petrochemical Company (KRPC). The International Journal of Science & Technoledge, 7(7). https://doi.org/10.24940/theijst/2019/v7/i7/ST1907-027