TY  - RPRT
TI  - Map of Hillsborough County, Florida, showing contours on the piezometric surface in the principal artesian aquifer
AU  - W.S. Wetterhall
PY  - 1959
DO  - 10.3133/ofr59127
UR  - https://pubs.usgs.gov/publication/ofr59127
ID  - ofr59127
ER  -