TY  - RPRT
TI  - Geologic map of the Ogle quadrangle, Clay and Knox Counties, Kentucky
AU  - Russell G. Ping
AU  - R.E. Sergeant
PY  - 1978
DO  - 10.3133/gq1484
UR  - https://pubs.usgs.gov/publication/gq1484
ID  - gq1484
ER  -