TY  - RPRT
TI  - Analytical data for bituminous coals and associated rocks from Arkansas, Iowa, Kansas, Missouri, Nebraska, and Oklahoma
AU  - S.J. Tewalt
AU  - R. B. Finkelman
PY  - 1990
DO  - 10.3133/ofr90669
UR  - https://pubs.usgs.gov/publication/ofr90669
ID  - ofr90669
ER  -