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.
U.S. Department of the Interior, U.S. Geological Survey
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Page Contact Information: Contact USGS
Last modified: Wednesday, November 23 2016, 12:26:16 PM
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