Fahmy Yasein Moselhy El-Eraky, <br/><br/>
Mineralogy and geoochemistry of some gem minerals, egypt /  
 دراسات معدنية و جيو كيميائية لبعض الاحجار الكريمة  
By Fahmy Yasein Moselhy El-Eraky;  Supervised By Dr.Maher A.takla, Prof. Dr. Abdel Aziz A.hussein,  Prof. Dr. Aly Sadek Abdel Wahed. 
 - 174 Leaves :   illustrations ;   30 cm. +  
<br/><br/>Thesis (Ph.D)-Cairo University, 1997. 
<br/><br/>Bibliography: pages 165-174. 
<br/><br/><label>Subjects--Index Terms: </label>GEOLOGY gem minerals  geoochemistry