1. The beginnings of agriculture in the Far East;Chang;Antiquity,1970
2. Il loess della Cina (The loess of China);Chelotti;Universo,1991
3. The forest and its change in Ningxia during historical times;Chen;J. of Ningxia Univ.,1981
4. Destruction of natural forests in Shaoxing area in historical times and its impacts on agriculture;Chen;Geographia Sinica,1965
5. Li Daoyuan fl. c. 500 a.d.;Chen;Geographers, Biobibliographical Studies,1988