Petrogenesis of Gabal El kahfa Ring Complex, Eastern Desert of Egypt.

Reducing four-level two-mode Hamiltonian to an effective two-level Hamiltonian with the addition of kerr-like medium

Hydrogeochemical Studies on The Groundwater East Gabel El Qalamoon Area, Western Desert, Egypt

Some Set Matrix Systems

On Co-F-Closed and Almost Co-F-Closed Topologies

PETROGRAPHY AND MINERAL CHEMISTRY AT WADI BALLI AREA, CENTRAL EASTERN DESERT, EGYPT

GEOCHEMISTRY OF SOME RECENT SURFACE SEDIMENTS NORTH AL WAJH, NW SAUDI ARABIA

Primary uranium mineralization in sheared pegmatite of Wadi El Regita, South Sinai, Egypt