TY  - RPRT
TI  - Quality of selected coal seams from Indiana: Implications for carbonization
AU  - R. Walker
AU  - Maria Mastalerz
AU  - P. Padgett
PY  - 2001
DO  - 10.1016/s0166-5162(01)00046-5
UR  - https://pubs.usgs.gov/publication/70023030
ID  - 70023030
ER  -