TY  - RPRT
TI  - Megascopic lithologic studies of coals in the Powder River basin in Wyoming and in adjacent basins in Wyoming and North Dakota
AU  - Michael H. Trippi
AU  - Gary D. Stricker
AU  - Romeo M. Flores
AU  - Ronald W. Stanton
AU  - Lora A. Chiehowsky
AU  - Timothy A. Moore
PY  - 2010
DO  - 10.3133/ofr20101114
UR  - https://pubs.usgs.gov/publication/ofr20101114
ID  - ofr20101114
ER  -