00970cam a22002651 4500 gs 25000400 DLC 20260227111329.0 760210s1925 dcu f000 0 eng gs 25000400 (OCoLC)1982298 DLC IDeKN OCoLC DLC QE75 .B9 no. 777 QE445 .H8 1925 Hunter, John Frederick, 1888-1917. Pre-Cambrian rocks of Gunnison river, Colorado, by J. Frederick Hunter. Washington, Govt. print. off., 1925. vi, 94 p. illus, xv pl. (incl. fold. map (in pocket)) 23 cm. U.S. Geological survey. Bulletin 777 At head of title: Department of the interior. Issued also as thesis (Ph. D.) Johns Hopkins university, 1912. Plates printed on both sides. Geology Colorado Gunnison River Valley. Geology, Stratigraphic Precambrian. 26415 26415