TY - RPRT TI - Potentiometric surface of the upper Floridan Aquifer, west-central Florida, May 1999 AU - A. D. Duerr AU - Arturo E. Torres PY - 2000 DO - 10.3133/ofr0072 UR - https://pubs.usgs.gov/publication/ofr0072 ID - ofr0072 ER -