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1by Flint, Lorraine E.“...U.S. Geological Survey :...”
Published 1990
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2by Moyer, Thomas C.“...U.S. Geological Survey :...”
Published 1996
Government Document Microform Book -
3by Flint, Lorraine E.“...U.S. Geological Survey,...”
Published 1998
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4by Flint, Lorraine E.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1995
Government Document Book -
5by Flint, Lorraine E.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1998
Government Document Book -
6Published 1996“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Government Document Book -
7by Hevesi, Joseph A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2002
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Government Document Book