Water levels and artesian pressure in observation wells in the United States.
APA Citation
Geological Survey (U.S.). Water levels and artesian pressure in observation wells in the United States. Washington: U.S. Govt. Print. Off.
MLA Citation
Geological Survey (U.S.). Water Levels And Artesian Pressure In Observation Wells In the United States. Washington: U.S. Govt. Print. Off,
Warning: These citations may not always be complete (especially for serials).