TY  - RPRT
TI  - Preliminary report on stratigraphy and depositional environments of the lignites in the Fort Union Formation, west-central North Dakota
AU  - Edward A. Rehbein
PY  - 1976
DO  - 10.3133/ofr7769
UR  - https://pubs.usgs.gov/publication/ofr7769
ID  - ofr7769
ER  -