00877cam a22002411 4500 gs 09000263 DLC 20260227111309.0 790216s1909 xxc 000 0 eng c gs 09000263 (OCoLC)4660287 U.S. Geol. Survey. Libr. OCl OCoLC DLC premarc TN490.T9 C2 Canada. Mines Branch (1901-1936) Report on the tungsten ores of Canada, by T. L. Walker. Ottawa, Printed by C. H. Parmelee, 1909. iv, 56 p. illus., 5 pl., 5 maps. 25 cm. "No. 25." "Bibliography of Canadian tungsten literature": p. 48-50. "Brief list of important literature on American tungsten occurrences--United States": p. 50. Tungsten ores Canada. Walker, T. L. (Thomas Leonard), 1867- 24846 24846