TY  - RPRT
TI  - Geologic map of the Roxana quadrangle, Letcher and Harlan Counties, Kentucky
AU  - Edwin K. Maughan
PY  - 1976
DO  - 10.3133/gq1299
UR  - https://pubs.usgs.gov/publication/gq1299
ID  - gq1299
ER  -