TY  - BOOK
AU  - Walker,Egbert H.
AU  - Ching,Ren Chang
TI  - Plants collected by R. C. Ching in southern Mongolia and Kansu Province, China
T2  - Smithsonian Institution.  U. S. National Museum.  Contributions from the U. S. National Herbarium,
AV  - QK1 .U5 vol. 28, pt. 4
U1  - 450.C76580.74 
PY  - 1941///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Botany
KW  - China
KW  - Gansu Sheng
KW  - Mongolia
N1  - Issued July 22, 1941; "Report of the expedition.  By R. C. Ching": p. 573-593; "Principal publications on Kansu, mostly botanical": p. 566-568 and index
ER  -