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Publish Date
2001
Publisher
U.S. Dept. of the Interior, U.S. Geological Survey,
Branch of Information Services [distributor]
Language
English
Pages
21
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Book Details
Edition Notes
Shipping list no.: 2002-0027-P.
Includes bibliographical references (p. 20-21).
Also available via Internet from the USGS web site. Address as of 12/4/01: http://wwwmn.cr.usgs.gov/wrd/pubs/01-4192.pdf; current access is available via PURL.