@article{219296, note = {Title varies slightly (some issues prior to May 1983 have title: Potentiometric surface of the Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida).}, url = {http://library.usi.edu/record/219296}, title = {Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida [microform] /}, publisher = {The Survey :}, recid = {219296}, pages = {maps ;}, address = {Denver, Colo. :}, }