TY  - RPRT
TI  - Summary of results of the coal resource occurrence and coal development potential mapping program in part of the Powder River basin, Montana and Wyoming
AU  - V. A. Trent
PY  - 1985
DO  - 10.3133/ofr85621
UR  - https://pubs.usgs.gov/publication/ofr85621
ID  - ofr85621
ER  -