TY  - RPRT
TI  - Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, September 1989
AU  - R. T. Burtell
PY  - 1990
DO  - 10.3133/ofr90188
UR  - https://pubs.usgs.gov/publication/ofr90188
ID  - ofr90188
ER  -