@misc{indiciae8a93586c7370, title = {Reconnaissance map of surficial geology of Beattyville Quadrangle, Kentucky River Area Development District, eastern Kentucky}, author = {Wayne L. Newell}, year = {1975}, doi = {10.3133/ofr7581}, url = {https://pubs.usgs.gov/publication/ofr7581}, note = {Source identifier: ofr7581} }