Circulars

This directory is best accessed from the "Public Issues in Earth Science" page. For a listing of online USGS Circulars, go to http://geology.usgs.gov/circular.html.
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U.S. Department of the Interior, U.S. Geological Survey
Persistent URL: http://pubs.water.usgs.gov/cir0115
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Last modified: Friday, September 30 2005, 05:18:47 PM 		FirstGov button  Take Pride in America button