TY  - RPRT
TI  - Geologic names of Ordovician rock-stratigraphic units exposed in Kentucky
AU  - Gordon Whitney Weir
AU  - Earle Rupert Cressman
PY  - 1978
DO  - 10.3133/ofr78796
UR  - https://pubs.usgs.gov/publication/ofr78796
ID  - ofr78796
ER  -