TY  - RPRT
TI  - Geologic map of the Richardson Quadrangle, Lawrence and Johnson counties, Kentucky
AU  - J. D. Sanchez
AU  - D.C. Alvord
AU  - Philip Thayer Hayes
PY  - 1977
DO  - 10.3133/ofr77880
UR  - https://pubs.usgs.gov/publication/ofr77880
ID  - ofr77880
ER  -