TY  - RPRT
TI  - Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, May 1990
AU  - Louis C. Murray
PY  - 1990
DO  - 10.3133/ofr90557
UR  - https://pubs.usgs.gov/publication/ofr90557
ID  - ofr90557
ER  -