TY  - RPRT
TI  - Coal resources of Montana
AU  - John Xavier Combo
AU  - D.M. Brown
AU  - H.F. Pulver
AU  - D.A. Taylor
PY  - 1949
DO  - 10.3133/cir53
UR  - https://pubs.usgs.gov/publication/cir53
ID  - cir53
ER  -