“Spectral Study of the Pollutants ( Gelbstoff) in Water Liquefaction of Some Areas of Baghdad Province by Using the Technique of Raman, Flora”. Ibn AL-Haitham Journal For Pure and Applied Sciences 25, no. 2 (May 8, 2017). Accessed July 16, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/609.