TY  - RPRT
TI  - Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 1986
AU  - R. M. Spechler
PY  - 1987
DO  - 10.3133/ofr8736
UR  - https://pubs.usgs.gov/publication/ofr8736
ID  - ofr8736
ER  -