Water resources data.
Pennsylvania.

APA Citation

Philadelphia (Pa.). Water Department., Pennsylvania. Department of Environmental Resources., Geological Survey (U.S.). Water Resources Division. (1982). Water resources data. Harrisburg, Pa.: U.S. Dept. of the Interior, Geological Survey .

MLA Citation

Philadelphia (Pa.). Water Department, Pennsylvania. Department of Environmental Resources, and Geological Survey (U.S.). Water Resources Division. Water Resources Data. Harrisburg, Pa.: U.S. Dept. of the Interior, Geological Survey , 1982.

Warning: These citations may not always be complete (especially for serials).