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AAberg Series 2 <br />D ietribut_ion sod 8xteat: Nigh mountain valleys of north-e en[ral Colorado. the ser iea le of moderate <br />itent:- <br />~eriea Eet ab liehad: Jaekeon County Area, Colorado, 1973. <br />Net ionel Cooperet ive Soil Survey <br />U. S. A. <br />• <br />• <br />-54a- <br />