TY  - RPRT
TI  - Geologic map of the La Center quadrangle, Ballard and McCracken Counties, Kentucky
AU  - Roger Warren Swanson
PY  - 1978
DO  - 10.3133/gq1417
UR  - https://pubs.usgs.gov/publication/gq1417
ID  - gq1417
ER  -