Mohanad Qader Kareem, Suzan Abd-allah Hassan and Maad Mohammed Ameen 2023. Doping Effect ((COCl2.6H2O) & (CuCl2.6H2O))(2%)w/v on Optical Energy gap of (GA/PVA) composite films. Tikrit Journal of Pure Science. 20, 4 (Feb. 2023), 114–119. DOI:https://doi.org/10.25130/tjps.v20i4.1222.