TY  - RPRT
TI  - Palynological studies of Lower Pennsylvanian coal beds and adjacent strata of the proposed Pennsylvanian System stratotype in Virginia and West Virginia
AU  - R.M. Kosanke
PY  - 1988
DO  - 10.3133/pp1479
UR  - https://pubs.usgs.gov/publication/pp1479
ID  - pp1479
ER  -