Plants collected by R. C. Ching in southern Mongolia and Kansu Province, China.
By: By Egbert H. Walker.
Contributors: Ching, Ren Chang.
Series: Smithsonian Institution.  U. S. National Museum.  Contributions from the U. S. National Herbarium,; v. 28, pt. 4
Publisher: U.S. Govt. Print. Off.
Published: 1941
Place of publication: Washington
Language: eng
Number of pages: 675
Subjects: Botany -- China -- Gansu Sheng.; Botany -- Mongolia.
Notes: "Principal publications on Kansu, mostly botanical": p. 566-568 and index.
Issued July 22, 1941.
"Report of the expedition.  By R. C. Ching": p. 573-593.