TY - RPRT TI - Potentiometric surface of the intermediate aquifer system, west-central Florida, September 1989 AU - Lari A. Knochenmus AU - G. L. Barr PY - 1990 DO - 10.3133/ofr90134 UR - https://pubs.usgs.gov/publication/ofr90134 ID - ofr90134 ER -