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Edition Notes
Caption title.
"The U.S. Geological Survey (USGS) is implementing the National Water-Quality Assessment (NAWQA) program to describe and explain water-quality conditions and trends of the Nation's surface-water and ground-water resources"--Introd.
Shipping list no.: 96-0253-P.
Includes bibliographical references (p. 12).
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Feedback?January 31, 2010 | Edited by WorkBot | add more information to works |
December 9, 2009 | Created by WorkBot | add works page |