00824cam a22002531 4500 gs 53000196 DLC 20260227111400.0 720313s1952 xx 000 0 eng gs 53000196 (OCoLC)261940 DLC OAkU DLC QE185 .A2 no. 267 QE195 .B62 Bostock, H. S. (Hugh Samuel), 1901- Geology of northwest Shakwak Valley, Yukon Territory. Ottawa, E. Cloutier, Queen's Printer, 1952. v, 54 p. illus., 2 fold. col. maps (in pocket) tables. Geological Survey of Canada. Memoir 267 Bibliography: p. 3-4. Geology Yukon Shakwak Valley. Petrology Yukon Shakwak Valley. Volcanic ash, tuff, etc. 28754 28754