TY  - RPRT
TI  - Potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 1999
AU  - Leel Knowles
PY  - 2000
DO  - 10.3133/ofr00246
UR  - https://pubs.usgs.gov/publication/ofr00246
ID  - ofr00246
ER  -