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<br />I \hJ'st~etert PttIi cK J-Cress <br />fQqS- <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />~t ,ft!l~... <br />[)ov2v'7 - <br /> <br />07Q?Q <br />---- <br /> <br />Aerial Photograph/GIS Analysis and Field Studies <br />of the Grand Valley and Ruby-Horsethief Canyon of <br />the Colorado River <br /> <br />by: <br />Mark M. Van Steeter <br />John Pitlick <br /> <br />Bob Cress <br /> <br />Department of Geography <br />University of Colorado <br />Boulder, Colorado 80309 <br /> <br />June, 1995 <br />