TY  - RPRT
TI  - Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, May 1991
AU  - G. G. Phelps
AU  - R. M. Spechler
AU  - L. C. Murray
AU  - L. A. Bradner
PY  - 1992
DO  - 10.3133/ofr91515
UR  - https://pubs.usgs.gov/publication/ofr91515
ID  - ofr91515
ER  -