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<br />Abundance Trends and Status of the Little <br />Colorado River Population of Humpback <br />Chub: An Update Considering 1989-2006 <br />Data <br /> <br />By Lewis G. Coggins, Jr. <br /> <br />Open-File Report 2007-1402 <br /> <br />U.S. Department of the Interior <br />U.S. Geological Survey <br />