@misc{indiciaeccdf07d8efe8, title = {Louisiana hydrologic atlas map no. 3: Altitude of the base of freshwater in Louisiana}, author = {Charles W. Smoot}, year = {1988}, doi = {10.3133/wri864314}, url = {https://pubs.usgs.gov/publication/wri864314}, note = {Source identifier: wri864314} }