I. GEOLOGY AND TOPOGRAPHY OF THE CORUNDUM DISTRTOT. The corundum is found in Ping Shan Hsien (平山縣) which is located in the south-western part of Chihli. It connects with Chin Hsing
I. GEOLOGY AND TOPOGRAPHY OF THE CORUNDUM DISTRTOT. The corundum is found in Ping Shan Hsien (平山縣) which is located in the south-western part of Chihli. It connects with Chin Hsing
李学清.1926. CORUNDUM OF PING SHAN DISTRICT, W. CHIHLI.[J].地质学报,(1). H. T. LEE.1926. CORUNDUM OF PING SHAN DISTRICT, W. CHIHLI.[J]. Acta Geologica Sinica,(1).
