KHAN, A. RASHEED, SHABlH-UL HASAN, A.F.K. IFRAHIM, and A.H.K. YOUSUFZAI. 1995. “?GRAFT COPOLYMERISATION OF ACRYLONITRILE ON TO POLYVINYL ALCOHOL”. Biological Sciences - PJSIR 38 (5-6):182-85. https://v2.pjsir.org/index.php/biological-sciences/article/view/2469.