TY  - RPRT
TI  - Geologic map of the Bighill quadrangle, east-central Kentucky
AU  - Gordon Whitney Weir
AU  - K. Y. Lee
AU  - P.E. Cassity
PY  - 1971
DO  - 10.3133/gq900
UR  - https://pubs.usgs.gov/publication/gq900
ID  - gq900
ER  -