Thamera K. M. Al-Rudaini and Israa M.H. Almousawi. “DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN SOIL AT AL-NAHRAWAN BRICKS FACTORY”. Pakistan Journal of Biotechnology, vol. 15, no. 2, June 2018, pp. 445-50, https://pjbt.org/index.php/pjbt/article/view/415.