Khan, Farid Ullah, B Shakila, S Jehangirb, and M Ashfaq. “INVESTIGATION OF PB, ZN, MN, NI, CO AND CR IN INSOLUBLE DUSTFALL”. Biological Sciences - PJSIR 46, no. 2 (April 28, 2003): 104–109. Accessed November 22, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/1603.