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• USDA-SCS. April 1985. Soil series of the United States, Puerto Rico, and the Virgin <br />Islands: Their taxonomic classification. in two sections. U.S. Gov't Printing Office, <br />Washington D,C. On microfiche. <br />USDASCSIWyoming. April 16-19, 1984. Updated information concerning new <br />designations for soil horizons and layers. (material passed out at SCS Workshop, <br />Casper, Wyoming by P.S. Derr, State Soil Correlator). 7 p. <br />U.S. Salinity Laboratory Staff. 1954. Diagnosis and improvement of saline and alkali <br />soils. USDA Agricultural Handbook No. 60. Washington, D.C. 160 p. <br />• <br />• (Revised 9/99) 2.04.9-22 <br />