Geological Society of America. Coal Geology Division., University of North Dakota. Department of Geology., North Dakota Geological Survey, & Ting, F. T. (1972). Depositional environments of the lignite-bearing strata in western North Dakota. [s.l. : s.n.].

Geological Society of America. Coal Geology Division., University of North Dakota. Department of Geology, North Dakota Geological Survey, and Francis Ta-Chuan Ting. Depositional Environments of the Lignite-bearing Strata in Western North Dakota. [s.l. : s.n.], 1972.

Geological Society of America. Coal Geology Division., University of North Dakota. Department of Geology, North Dakota Geological Survey, and Francis Ta-Chuan Ting. Depositional Environments of the Lignite-bearing Strata in Western North Dakota. [s.l. : s.n.], 1972.