TY  - RPRT
TI  - Preliminary geologic map of the Soldier quadrangle, northeastern Kentucky
AU  - John Calvin Philley
AU  - David Kent Hylbert
AU  - Harry P. Hoge
PY  - 1975
DO  - 10.3133/ofr75151
UR  - https://pubs.usgs.gov/publication/ofr75151
ID  - ofr75151
ER  -