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1by Holmes, Robert R., 1965-“...U.S. Geological Survey circular ;...”
Published 1996
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2by Southard, Rodney E.“...U.S. Geological Survey circular ;...”
Published 1995
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Government Document eBook -
3by Southard, Rodney E.“...U.S. Geological Survey circular ;...”
Published 1995
HathiTrust Digital Library
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4by Holmes, Robert R., 1965-“...U.S. Geological Survey circular ;...”
Published 1996
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Get full text
Address at time of PURL creation
Government Document eBook