TY  - RPRT
TI  - Geologic history of natural coal-bed fires, Powder River basin, USA
AU  - E.L. Heffern
AU  - D. A. Coates
PY  - 2004
DO  - 10.1016/j.coal.2003.07.002
UR  - https://pubs.usgs.gov/publication/70026866
ID  - 70026866
ER  -