Technology and use of lignite:  proceedings, Bureau of Mines-University of North Dakota symposium, Bismarck, North Dakota, May 12-13, 1971. compiled by Wayne R. Kube and James L. Elder
Contributors: Kube, W.R.; Elder, J.L.
Publisher: U.S. Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 145
Subjects: Lignite - Congresses
Notes: 11