TY  - RPRT
TI  - Analysis of ten coal samples from the Michigan basin
AU  - Charles L. Oman
AU  - Robert B. Finkelman
AU  - Ronald T. Talley
PY  - 1992
DO  - 10.3133/ofr92180
UR  - https://pubs.usgs.gov/publication/ofr92180
ID  - ofr92180
ER  -