TY  - RPRT
TI  - Lignite drilling during 1977 in western North Dakota: Adams, Billings, Bowman, Dunn, Golden Valley, Grant, Hettinger, Mercer, Oliver, Slope, Stark, and Williams Counties
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1978
DO  - 10.3133/ofr78888
UR  - https://pubs.usgs.gov/publication/ofr78888
ID  - ofr78888
ER  -