TY  - RPRT
TI  - Coal resource occurrence and coal development potential maps of the Hamilton Draw Quadrangle, Rosebud, Big Horn, and Powder River counties, Montana
AU  - W. J. Mapel
AU  - B. K. Martin
AU  - B. A. Butler
PY  - 1978
DO  - 10.3133/ofr7840
UR  - https://pubs.usgs.gov/publication/ofr7840
ID  - ofr7840
ER  -