TY  - RPRT
TI  - Chemical analyses of lignite from the Sentinel Butte Member of the Fort Union Formation, Dunn Center Field, Dunn County, North Dakota
AU  - Joseph R. Hatch
AU  - Ronald H. Affolter
PY  - 1978
DO  - 10.3133/ofr781078
UR  - https://pubs.usgs.gov/publication/ofr781078
ID  - ofr781078
ER  -