@misc{indiciae466dac141f30, title = {Surface water supply of the United States, 1939, Part III, Ohio River basin}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1941}, doi = {10.3133/wsp873}, url = {https://pubs.usgs.gov/publication/wsp873}, note = {Source identifier: wsp873} }