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<br />Reconnaissance Investigation of Water Quality, <br />Bottom Sediment, and Biota Associated with <br />Irrigation Drainage In the Dolores Project <br />Area, Southwestern Colorado and <br />Southeastern Utah, 1990-91 <br /> <br />by David L. Butler, U.S. Geological Survey; <br />Richard P. Krueger and Barbara Campbell Osmundson, <br />U.S. Fish and Wildlife Service; and <br />Errol G. Jensen, Bureau of Reclamation <br /> <br />U.S. GEOLOGICAL SURVEY <br /> <br />Water-Resources Investigations Report 94-4041 <br /> <br />u.s. GEOLOGICAL SURVEY <br />u.s. FISH AND WILDUFE SERVICE <br />BUREAU OF RECLAMATION <br />BUREAU OF INDIAN AFFAIRS <br /> <br />Denver, Colorado <br />1995 <br /> <br />