TY  - RPRT
TI  - Geologic map of the Orangeburg quadrangle, northeastern Kentucky
AU  - F.A. Schilling
AU  - John H. Peck
PY  - 1967
DO  - 10.3133/gq588
UR  - https://pubs.usgs.gov/publication/gq588
ID  - gq588
ER  -