@misc{indiciae032762d6bc0f, title = {Reconnaissance of ground-water resources in the Western Coal Field Region, Kentucky}, author = {Bruce William Maxwell and Robert Washburn Devaul}, year = {1962}, doi = {10.3133/wsp1599}, url = {https://pubs.usgs.gov/publication/wsp1599}, note = {Source identifier: wsp1599} }