TY  - RPRT
TI  - Coal resource occurrence and coal development potential maps of the Twentymile Butte Quadrangle, Campbell County, Wyoming
AU  - IntraSearch Inc.
PY  - 1979
DO  - 10.3133/ofr7934
UR  - https://pubs.usgs.gov/publication/ofr7934
ID  - ofr7934
ER  -