01101cam a22002651 4500 gs 25000093 DLC 20260227111329.0 780930s1925 ndua b s001 0 eng gs 25000093 (OCoLC)4255827 DLC NdU DLC TN834.U5 N9 1925 Leonard, Arthur Gray, 1865- The lignite deposits of North Dakota, by Arthur G. Leonard, Earle J. Babcock [and] Leonard P. Dove. [Grand Forks] Published for the State Geological Survey [Normanden Publishing Co.] 1925. [6] 240 p. incl. illus., tables, diagrs. xxi pl. (incl. 7 fold. maps, fold. diagr.) 23 cm. North Dakota. Geological Survey. Bulletin no. 4 In cooperation with the School of Mines, College of Engineering, University of North Dakota. Bibliographical references. Lignite North Dakota. Babcock, E. J. (Earle Jay), 1865- Dove, Leonard Percy, 1883- University of North Dakota. College of Engineering. 26371 26371