“Photostabilization of Poly (Vinyl Chloride) by Some Schiff Base Derivedfrom 2-Amino Pyridine”. Al-Nahrain Journal of Science 16, no. 4 (July 4, 2018): 18–28. Accessed July 22, 2024. https://anjs.edu.iq/index.php/anjs/article/view/515.