Preparation and Study of the Optical Properties of Recycled Materials of Polymethyl methacryalate Doped with Different Ratios of 4-(2- Pyridylazo) Resorcinol Monosodium Salt Hydrate. Baghdad Sci.J [Internet]. 2024 Dec. 1 [cited 2025 Jun. 3];21(12):3846-5. Available from: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/7953