(1)Dr .El-Sayed Mohamed Abdelrahman Professor of Geophysics ,Cairo University ,Egypt . His pri mary researchinterests are poten-tial field methods . His researc
20001464 Chen Wenming(Institute of Min-eral Deposits,CAGS,Beijing);Li YongsenDistribution of Nonferrous Metallie MineralResources in Qinghai一Tibet Plateau,Chin