During the last spring (April-May 1924), we have, F. Licent and I crossed the Northern Chihli and the eastern part of the Inner Mongolia.
P. TEILHARD DE CHARDIN.1924.[J].地质学报,(3).
P. TEILHARD DE CHARDIN.1924. GEOLOGY OF NORTHERN CHIHLI AND EASTERN MONGOLIA.[J]. Acta Geologica Sinica,(3).
