TY - RPRT TI - Potentiometric surface of the Upper Floridan aquifer in the Ichetucknee springshed and vicinity, northern Florida, September 2003 AU - A. Alejandro Sepulveda AU - Brian G. Katz AU - Gary L. Mahon PY - 2006 DO - 10.3133/ofr20061031 UR - https://pubs.usgs.gov/publication/ofr20061031 ID - ofr20061031 ER -