TY  - RPRT
TI  - Preliminary report on methodology for calculating coal resources of the Wyodak-Anderson coal zone, Powder River basin, Wyoming and Montana
AU  - Margaret S. Ellis
AU  - Gregory L. Gunther
AU  - Romeo M. Flores
AU  - Gary D. Stricker
AU  - Allan M. Ochs
AU  - John H. Schuenemeyer
PY  - 1998
DO  - 10.3133/ofr98789b
UR  - https://pubs.usgs.gov/publication/ofr98789B
ID  - ofr98789B
ER  -