Mohammed, N.J., Rasheed, Z.S. and Hassan, A.S. 2019. Improvement Optical Properties of PVA/ TiO2 and PVA/ ZnO Nanocomposites. Al-Mustansiriyah Journal of Science. 29, 3 (Mar. 2019), 118–123. DOI:https://doi.org/10.23851/mjs.v29i3.629.