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W <br />• a <br />• t <br />LITERATURE CITED <br />Harrington, H.D. 1964. Manual of the Plants of Colorado. The Swallow <br />Press, Inc., Chicago. 666p. <br />U.S.D.A. Forest Service. 1937. Range Plant Handbook. PB 168-589, <br />Lieber, Llilliam A. 1976. Rocky Mountain Flora. Colorado Associated <br />University Press, Boulder, Colorado. <br />17 <br />