TY  - RPRT
TI  - Preliminary report of 1976 lignite drilling in western North Dakota: Adams, Billings, Dunn, Hettinger, McKenzie, Mercer, Morton, Oliver, and Stark Counties
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/ofr77857
UR  - https://pubs.usgs.gov/publication/ofr77857
ID  - ofr77857
ER  -