Iyobosa.Timothy, Asowata, and Olatunji Akinade Shadrach. 2019. “Assessment of Polycyclic Aromatic Hydrocarbon in Soils and Sediments in Onitsha Area, Southeastern, Nigeria”. International Journal of Advanced Geosciences 7 (2): 129-38. https://doi.org/10.14419/ijag.v7i2.29266.