@misc{indiciaef4eb184a5c83, title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 2000}, author = {Leel Knowles}, year = {2001}, doi = {10.3133/ofr01160}, url = {https://pubs.usgs.gov/publication/ofr01160}, note = {Source identifier: ofr01160} }