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V. LITERATURE CITED <br /> <br /> <br />• <br />U. S. Department of Agriculture. Soil Conservation Service. 1981. Soil Survey of <br />Paonia Area, Colorado, parts of Delta, Gunnison, and Montrose Counties. <br />Weber, William A. 1987. Colorado Flora: Western Slope. Colorado Associated <br />University Press <br />Whitson, Tom D. editor. 1987. Weeds and Poisonous Plants of Wyoming and Utah. <br />University of Wyoming Cooperative Extension Service. <br />-7- <br />