Technology and use of lignite :
proceedings: Bureau of Mines-University of North Dakota Symposium, Grand Forks, N. Dak., May 1-2, 1969 /
compiled by James L. Elder and Wayne R. Kube.

APA Citation

Lignite Symposium (1969 : University of North Dakota)., Elder, J. Lowry., Kube, W. R., University of North Dakota., United States. Bureau of Mines. (1970). Technology and use of lignite: proceedings: Bureau of Mines-University of North Dakota Symposium, Grand Forks, N. Dak., May 1-2, 1969. [Washington, D.C.]: United States Dept. of the Interior, Bureau of Mines.

MLA Citation

United States. Bureau of Mines, et al.. Technology And Use of Lignite: Proceedings: Bureau of Mines-University of North Dakota Symposium, Grand Forks, N. Dak., May 1-2, 1969. [Washington, D.C.]: United States Dept. of the Interior, Bureau of Mines, 1970.