TY  - RPRT
TI  - Geologic map of the Perryville quadrangle, Mercer and Boyle Counties, Kentucky
AU  - Earle Rupert Cressman
PY  - 1974
DO  - 10.3133/gq1185
UR  - https://pubs.usgs.gov/publication/gq1185
ID  - gq1185
ER  -