MINERALOGY AND GEOCHEMISTRY OF THE GEMSTONES AND THE GEMSTONE-BEARING PEGMATITES IN SHIGAR VALLEY OF SKARDU NORTHERN AREAS OF PAKISTAN By MUHAMMAD HASSAN
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MINERALOGY AND GEOCHEMISTRY OF THE GEMSTONES AND THE GEMSTONE-BEARING PEGMATITES IN SHIGAR VALLEY OF SKARDU NORTHERN AREAS OF PAKISTAN By MUHAMMAD HASSAN