Basheer Mahmood, R., ریان, Ahmed Najim, Z. and زاهدة 2019. Finding the Relationship Between the Biological Dagradtion Rate Constants and Some of the Calculated Physical Properties of a Number of Carcinogenic poly Aromatic Hydrocarbons. Journal of Education and Science (JES). 28, 3 (Sep. 2019), 17–29. DOI:https://doi.org/10.33899/edusj.2019.162976.