TY  - RPRT
TI  - Preliminary report on 1975 drilling of lignite in western North Dakota: Adams, Bowman, Dunn, Hettinger, McLean, Mercer, Oliver, Slope, and William Counties
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1976
DO  - 10.3133/ofr76869
UR  - https://pubs.usgs.gov/publication/ofr76869
ID  - ofr76869
ER  -