The Square Buttes coal field, Oliver and Mercer Counties, North Dakota

by William D. Johnson, Jr. and Robert P. Kunkel
Bok · Engelsk · 1959 William David Johnson

Utgitt	Washington , 1959
Omfang	V, 91 s., 6 pl. (1 fold.) : ill.
Emner	Coal - North Dakota Geology, Economic - North Dakota