AHMAD, Z., JAVED, M., BAQARI, S., HAQAND, A. U. and KHAN, A. (1996) “?A STUDY OF PAKISTANI GYPSUM BY X-RAY POWDER DIFFRACTION”, Biological Sciences - PJSIR, 39(5-8), pp. 110–113. Available at: http://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/2385 (Accessed: 8 June 2025).