V. . HUSAIN, . S. . SULTAN, . . R. . BILQEES, A. MATEEN, and . B. . KHAN, “PEtROGRAPHIC AND GEOCHEMICAL STUOIES OF SOME PHOSPHORITE ’- DEPOSITS OF HAZARA, PAKISTAN”, Pakistan Journal of Scientific & Industrial Research, vol. 37, no. 6-7, pp. 245–251, Jun. 2022.