Analysis of the northern Great Plains province lignites and their ash :
a study of variability /
by Everett A. Sondreal, Wayne R. Kube, and James L. Elder.

APA Citation

Sondreal, E. A., Elder, J. L., Kube, W. R., United States. Bureau of Mines. (1968). Analysis of the northern Great Plains province lignites and their ash: a study of variability. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.

MLA Citation

Sondreal, Everett A, James L Elder, Wayne R Kube, and United States. Bureau of Mines. Analysis of the Northern Great Plains Province Lignites And Their Ash: a Study of Variability. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1968.