Subsurface correlations of the Cretaceous Greenhorn-Lakota interval in North Dakota.
Hansen, Dan E.
Subsurface correlations of the Cretaceous Greenhorn-Lakota interval in North Dakota. - Grand Forks, 1955. - 46 p. maps, diagrs. (2 fold. in pocket) tables. 23 cm.
Bibliographical footnotes.
gs 55000319
Geology, Stratigraphic--Cretaceous.
Geology--North Dakota.
QE685 / .H22
551.77 551.76*
Subsurface correlations of the Cretaceous Greenhorn-Lakota interval in North Dakota. - Grand Forks, 1955. - 46 p. maps, diagrs. (2 fold. in pocket) tables. 23 cm.
Bibliographical footnotes.
gs 55000319
Geology, Stratigraphic--Cretaceous.
Geology--North Dakota.
QE685 / .H22
551.77 551.76*