TY  - RPRT
TI  - Geologic map of the Caledonia quadrangle, Trigg and Christian Counties, Kentucky
AU  - George E. Ulrich
AU  - Harry Klemic
PY  - 1966
DO  - 10.3133/gq604
UR  - https://pubs.usgs.gov/publication/gq604
ID  - gq604
ER  -