Gohar, R. A., K. R. Kazmi, A. Hafeez, and S. Anwar. “IMPROVEMENT IN BENEFICIATION OF Low GRADE FLUORITE ORE FROM KALAT MARAN RANGE”. Biological Sciences - PJSIR, vol. 45, no. 1, Feb. 2002, pp. 63-68, https://v2.pjsir.org/index.php/biological-sciences/article/view/1746.