Iyobosa.Timothy, A. and Akinade Shadrach, O. (2019) “Assessment of Polycyclic Aromatic Hydrocarbon in Soils and Sediments in Onitsha area, Southeastern, Nigeria”, International Journal of Advanced Geosciences, 7(2), pp. 129–138. doi:10.14419/ijag.v7i2.29266.