?COMPOSITION, ORIGIN AND ECONOMIC POTENTIAL OF KAKUL, LAGARBAN AND TARNAWAI PHOSPHORITE DEPOSITS OF HAZARA, PAKISTAN*. Pakistan Journal of Scientific & Industrial Research [Internet]. 1997 Apr. 21 [cited 2026 Apr. 25];40(1-4):6-11. Available from: http://www.v2.pjsir.org/index.php/biological-sciences/article/view/2311