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<br />i-o <br />..,. <br />o <br />i-o <br /> <br />Water Quality in the Upper Colorado River <br />Basin, Colorado, 1996-98 <br /> <br />By Norman E, Spahr, Lori E, Apodaca, Jeffrey R, Deacon, Jeffrey B, Bails, <br />Nancy J, Bauch, C, Michelle Smith, and Nancy E, Driver <br /> <br />US GEOLOGICAL SURVEY CIRCULAR 1214 <br />