Pennsylvania.
Contributors: Geological Survey (U.S.)
Series: USGS fact sheet -- 039-99.; Fact sheet (Geological Survey (U.S.)) -- FS-99-039.
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 1999
Place of publication: [Reston, Va.?
Language: eng
Subjects: Water quality -- Pennsylvania.; Hydrogeological surveys -- Pennsylvania.; Water -- Pollution -- Pennsylvania.
Notes: Caption title.

Shipping list no.: 99-0376-P.

"August 1999"--P. [1].