Babajide, S. O., Oderinde, O. K., Akinlabi, A. K., & Egbemuyiwa, A. O. (2015). Exhaust Hydrocarbon Emission Concentration Level in Abeokuta Metropolis, Ogun State, Nigeria: A Case Study of Commercial Motorcycles (Okada). International Journal of Sciences: Basic and Applied Research (IJSBAR), 23(1), 167–180. Retrieved from https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4036