TY  - RPRT
TI  - Palynological studies of Middle Pennsylvanian coal beds of the proposed Pennsylvania System stratotype in West Virginia
AU  - R.M. Kosanke
PY  - 1988
DO  - 10.3133/pp1455
UR  - https://pubs.usgs.gov/publication/pp1455
ID  - pp1455
ER  -