TY  - RPRT
TI  - Energy resources map of the Powder River Basin, Wyoming and Montana
AU  - W. R. Keefer
AU  - P. W. Schmidt
PY  - 1973
DO  - 10.3133/i847a
UR  - https://pubs.usgs.gov/publication/i847A
ID  - i847A
ER  -