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21Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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22Published 2006“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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23Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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24Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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25Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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26Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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27Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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28Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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29Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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30Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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31Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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32Published 2007“...U.S. Dept. of the interior, U.S. Geological Survey ;...”
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33Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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34Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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35Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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36Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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37by Frost, Thomas P.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2006
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38by Johnson, Bruce R.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1995
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39by Bookstrom, Arthur A.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1995
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40by Raines, Gary L.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1996
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