TY  - RPRT
TI  - Geologic map of the Balkan quadrangle, Bell and Harlan Counties, Kentucky
AU  - A.J. Froelich
AU  - James Tazelaar
PY  - 1973
DO  - 10.3133/gq1127
UR  - https://pubs.usgs.gov/publication/gq1127
ID  - gq1127
ER  -