01205cam a22003011 4500 agr41000524 DLC 20260227111000.0 781103s1941 dcuab b 001 0 eng c agr41000524 (OCoLC)4346603 U. S. Dept. of Agr. Library TxEU DLC premarc QK1 .U5 vol. 28, pt. 4 QK355 .W24 Copy 2 450.C76 580.74 Walker, Egbert H. (Egbert Hamilton), 1899-1991. Plants collected by R. C. Ching in southern Mongolia and Kansu Province, China. By Egbert H. Walker. Washington, U.S. Govt. Print. Off., 1941. v, 563-675, vii-xiii p. illus., pl. 21-27 (incl. fold. map) on 4 l, 25 cm. Smithsonian Institution. U. S. National Museum. Contributions from the U. S. National Herbarium, v. 28, pt. 4 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. Botany China Gansu Sheng. Botany Mongolia. Ching, Ren Chang. 10142 10142