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1by Clark, Allen K.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
Government Document Book -
2by Groschen, G. E.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
Government Document Book -
3by Clark, Allan K.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2000
Government Document Book -
4by Ockerman, Darwin J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2002
Government Document Book -
5by Clark, Amy R. (Amy Richter), 1961-“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2003
Government Document Book -
6by Clark, Allan K.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2006
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Government Document Book