TY  - RPRT
TI  - Comparison of the Eastern and Western Kentucky coal fields (Pennsylvanian), USA-why are coal distribution patterns and sulfur contents so different in these coal fields?
AU  - S.F. Greb
AU  - C.F. Eble
AU  - D.R. Chesnut
PY  - 2002
DO  - 10.1016/s0166-5162(02)00115-5
UR  - https://pubs.usgs.gov/publication/70024816
ID  - 70024816
ER  -