About EL-RAYES M K
About Suez Canal Univ., EGY
About HASSONA F A K
About Minia Univ., EGY
About HASSAN M A
About Minia Univ., EGY
About HASSAN A M
About Minia Univ., EGY
About Proceedings. 6th International Congress. International Association of Engineering Geology, 1990, Vol.1