00970cam a22002891 4500 gs 63000205 DLC 20260227111412.0 790425s1962 nduab b s000 0 eng c gs 63000205 (OCoLC)4893298 U.S. Geol. Survey. Libr. MnMohC DLC premarc n-us-nd QE149 .C3 Carlson, C. G. (Clarence Gustav) Upper Ordovician and Silurian rocks of North Dakota, by C. G. Carlson and W. P. Eastwood. Grand Forks, 1962. ii, 52 p. illus., maps. 23 cm. North Dakota Geological Survey. Bulletin 38 Part of illustrative matter fold. in pocket. Bibliography: p. 23-26. Geology North Dakota. Geology, Stratigraphic Ordovician. Geology, Stratigraphic Silurian. Eastwood, William Parker, joint author. 29708 29708