TY  - RPRT
TI  - Observations on the palynology, petrography and geochemistry of the Western Kentucky number 4 coal bed
AU  - C.F. Eble
AU  - S.F. Greb
AU  - D.A. Williams
AU  - J.C. Hower
PY  - 1999
DO  - 10.1016/s0166-5162(98)00042-1
UR  - https://pubs.usgs.gov/publication/70021717
ID  - 70021717
ER  -