TY  - RPRT
TI  - Regional correlation of the middle coal group of the Upper Cretaceous Mesaverde Group, Yampa coal field, Moffat and Routt counties, Colorado
AU  - Edward A. Johnson
AU  - Michael E. Brownfield
PY  - 1988
DO  - 10.3133/coal123
UR  - https://pubs.usgs.gov/publication/coal123
ID  - coal123
ER  -