TY  - RPRT
TI  - Geologic map of the Grayson quadrangle, Carter County, Kentucky
AU  - Charles L. Whittington
AU  - John C. Ferm
PY  - 1967
DO  - 10.3133/gq640
UR  - https://pubs.usgs.gov/publication/gq640
ID  - gq640
ER  -