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<br /> <br />S.O1~ SIitYE}/' O~ -- <br />V~erd- COC~rttv~, ~o[orado <br />-a <br />- -_ <br />._ <br />r ., <br /> <br />United States Deportment of Agriculture <br />Soil Conservation Service <br />in coopera~ion with <br />Colorado Agricultural Experiment Station <br />