PEtROGRAPHIC AND GEOCHEMICAL STUOIES OF SOME PHOSPHORITE ’- DEPOSITS OF HAZARA, PAKISTAN. Pakistan Journal of Scientific & Industrial Research [Internet]. 2022 Jun. 9 [cited 2026 Mar. 10];37(6-7):245-51. Available from: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/2675