TY  - RPRT
TI  - Paleoecological interpretation of a middle Pennsylvanian coal bed in the central Appalachian basin, U.S.A.
AU  - C.F. Eble
AU  - W.C. Grady
PY  - 1990
DO  - 10.1016/0166-5162(90)90054-3
UR  - https://pubs.usgs.gov/publication/70015780
ID  - 70015780
ER  -