ARTHUR, A.A., EMENYI, E.O. and OKPO, S.A. 2025. ENVIRONMENTAL DEGRADATION COST AND FINANCIAL PERFORMANCE OF LISTED OIL AND GAS FIRMS IN NIGERIA. GPH-International Journal of Applied Science. 8, 9 (Nov. 2025), 23-66. DOI:https://doi.org/10.5281/zenodo.17500441.