Zayir, Yousif M., Nada. S. Ahmedzeki, Takrid M. Nafae, Wssam Zaidan, O.El Samad, and Rola Bou Khozam. 2016. “Radiological Assessment and Mechanical Separation of NORM Contaminated Soil from Iraqi Oil Fields”. Iraqi Journal of Chemical and Petroleum Engineering 17 (2): 25-35. https://doi.org/10.31699/IJCPE.2016.2.4.