Proceedings IIIrd Conference on Geochemistry, Vol. I: Geochemistry of Igneous Rocks and Ge, 17-31 STARTPAGE=17;ENDPAGE=31;TITLE=Proceedings IIIrd Conference on Geochemistry, Vol. I: Geochemistry of Igneous Rocks and Ge Takla, M A, Khalaf, I M, Helmers, H & Al-Boghdady, A A 1997, The shield rocks of Wade Safaga, Central Eastern Desert, Egypt . in Proceedings IIIrd Conference on Geochemistry, Vol. I: Geochemistry of Igneous Rocks and Ge . pp. 17-31 .