TY  - RPRT
TI  - Field geology of Tertiary coals in the Powder River Basin, Wyoming and Montana
AU  - R. M. Flores
AU  - Peter D. Warwick
AU  - T.A. Moore
AU  - J. N. Weaver
PY  - 1987
UR  - https://pubs.usgs.gov/publication/70194831
ID  - 70194831
ER  -