TY  - RPRT
TI  - Resource assessment of the Springfield, Herrin, Danville, and Baker coals in the Illinois Basin
AU  - Joseph R. Hatch
AU  - Ronald H. Affolter
PY  - 2002
DO  - 10.3133/pp1625d
UR  - https://pubs.usgs.gov/publication/pp1625D
ID  - pp1625D
ER  -