@misc{indiciae00b43019d77f, title = {Ground-water levels in the United States, 1969-73, Southeastern states}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1975}, doi = {10.3133/wsp2171}, url = {https://pubs.usgs.gov/publication/wsp2171}, note = {Source identifier: wsp2171} }