TY  - RPRT
TI  - Geologic map of the Big Creek Quadrangle, southeastern Kentucky
AU  - Richard Quintin Lewis
AU  - Dan E. Hansen
PY  - 1977
DO  - 10.3133/ofr77879
UR  - https://pubs.usgs.gov/publication/ofr77879
ID  - ofr77879
ER  -