TY  - RPRT
TI  - Coal quality and major, minor, and trace elements in the Powder River, Green River, and Williston basins, Wyoming and North Dakota
AU  - Gary D. Stricker
AU  - Romeo M. Flores
AU  - Michael H. Trippi
AU  - Margaret S. Ellis
AU  - Carol M. Olson
AU  - Jonah E. Sullivan
AU  - Kenneth I. Takahashi
PY  - 2007
DO  - 10.3133/ofr20071116
UR  - https://pubs.usgs.gov/publication/ofr20071116
ID  - ofr20071116
ER  -