TY  - BOOK
AU  - Dow,Wallace G.
TI  - The spearfish formation in the Williston Basin of western North Dakota,
T2  - North Dakota. Geological Survey. Bulletin
AV  - QE149 .D67
PY  - 1967///
CY  - Grand Forks, N.D.
KW  - Geology
KW  - North Dakota
KW  - Williston Basin
KW  - Geology, Stratigraphic
KW  - Permian
KW  - Triassic
N1  - Part of the illustrative matter fold. in pocket; Bibliography: p. 27-28
ER  -