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<br />0593
<br />
<br />Conse~lation Technology Information Cente=, June 1993 - US
<br />Fertilizer Use Relatively Stalk.
<br />
<br />Control of Water Pollution from Cropland volume 1, November
<br />1975, USDA Agricultural Research Service and EPA Office of
<br />Research and Development.
<br />County and City Data Book, 1962, 1972, 1977, 1980 - U.S.
<br />Department of Commerce, Bureau of Census.
<br />
<br />Donnelly, Kathleen, "The Early Days of the Santa Fe Trail,"
<br />1993, Southeast Colorado Travel Guide, Southeast Colorado
<br />Tourism Council, Inc.
<br />
<br />Duce, J. T., "Geology of Parts of Las Animas, Otero, and
<br />Bent Counties, " Part III, Bulletin 27, Colorado Geological
<br />Survey, 1924.
<br />
<br />Ente~rise Budgets for Colorado Dare Information Report
<br />1R:92-1 - Department of Agricultural and Resource Economics,
<br />Colorado State University Cooperative Exte,-sion.
<br />
<br />Evaluation of Water Quality in the Arkansas River Basin of
<br />Colorado, October 1989 - US Geological Survey of P~eblo,
<br />Colorado Subdistrict Office.
<br />
<br />Fenneman, N.M., Phvsioaraohv of the Weste=~ United States,
<br />McGraw-Hill, New York, 1931.
<br />
<br />Final Report on Land Owne=ship and Land Use-Prese,-t, Past
<br />and Fut~re Irrigation, by Colorado Land Resources
<br />Subcommittee to State Coordinator for Colorado - Arkansas-
<br />White-Red Basins, July 21, 1952.
<br />
<br />Gaydos, M.W., Summary of Water Quality Data for Selected
<br />Streams in Colorado - US Geological Survey, Water Resources
<br />Investigations Open File Report 80-682. P=epared in
<br />cooperation with the Colorado Department of Health Radiation
<br />and Hazardous Wastes Control Division.
<br />
<br />Guide to the Geology of Colorado published by Geological
<br />Society of America, Rocky Mountain Association of
<br />Geologists, Colorado Scientific Society 1960.
<br />
<br />Hanks, R.J. 1974. Model for Predicting Plant Yield as
<br />Influenced by Water Use. Agronomy Journal 66:660-665.
<br />
<br />Hatten, H.J., Selenium in the Upper Cretaceous Niobrara
<br />Formation and Pierre Shale of South-Central Colorado in
<br />Abstracts for 1968 - Geological Society of America Special
<br />Paper 121, 1968, p. 606.
<br />
<br />Houk, I., Irrigation Engineering, volume II Projects,
<br />Conduits, and Structures.
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