TY  - RPRT
TI  - Geologic map of the Roxana 7 1/2-minute Quadrangle, Letcher and Harlan counties, Kentucky
AU  - Edwin K. Maughan
PY  - 1976
DO  - 10.3133/ofr76156
UR  - https://pubs.usgs.gov/publication/ofr76156
ID  - ofr76156
ER  -