01118cam a22002891 4500 gs 31000172 DLC 20260227111335.0 760401s1930 sa abce 100 0 eng c gs 31000172 (OCoLC)2084411 U. S. Geol. Survey. Libr. NcBoA NcBoA DLC engfregeritaspa premarc f-sa--- QE1 .I6 1929 550.63 International Geological Congress (15th : 1929 : Pretoria, etc.) Compte rendu of the XV. session, South Africa, 1929. Pretoria, Wallachs' Ltd., 1930. 2 v. front. (v. 1) illus., plates, ports., maps, plans, tables, diagrs. 27 cm. At head of title: International Geological Congress. Part of the plates, maps, plans, tables and diagrams are folded. Contributions in English, French, German, Italian or Spanish. The Italian and Spanish papers are accompanied by abstracts in English or French. Geology Congresses. Geology South Africa. 26886 26886