1.

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

Pages 1-31
Wifky S.A. El-Naggar
2.

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

Pages 1-20
Mervat. A. A. El-Deberky; Mona. F.M. Ali
3.

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

Pages 48-67
Raafat M.S. Shahata
4.

Some Set Matrix Systems

Pages 21-33
F.A.A. GHOURABA; M.A. SEOUD
5.

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

Pages 34-41
Arafa A. NASEF
6.

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

Pages 68-76
Emile L. lliase; Raafat M.S. Shahata; Kandil M. Kandil; Joseph M. Samaan
7.

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

Pages 77-90
A. M. B. Moufti; I. H. Arafa
8.

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

Pages 32-47
Amer H. A. Bishr; Said A. Azzaz; Hassan M. Sherif; Ibrahim E. El-Aassy