KHAN, A. R., HASAN, S.-U., IFRAHIM, A., & YOUSUFZAI, A. (1995). ?GRAFT COPOLYMERISATION OF ACRYLONITRILE ON TO POLYVINYL ALCOHOL. Biological Sciences - PJSIR, 38(5-6), 182–185. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/2469