Ayeni, Samuel Olalekan. “Spatial Analysis and Vulnerability Mapping of Bitumen Deposit In Okitipupa Local Government Area of Ondo State”. African Journal on Land Policy and Geospatial Sciences, vol. 5, no. 5, Nov. 2022, pp. 1104-15, doi:10.48346/IMIST.PRSM/ajlp-gs.v5i5.32599.