Ibeh , N. J., Usiayo, A. V., & Horsfall , M. (2025). Experimental and Economic Evaluation of Cocoa-Pod Waste as a Bio-Surfactant for Enhanced Oil Recovery in Niger Delta Sandstone Reservoirs. Researchers Journal of Science and Technology, 5(5), 53–64. https://doi.org/10.83080/rejost.vol5no5.206