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REFERENCES <br />• Brown, H. E. 1958 <br />39(2):317-327. <br />Gambel oak in west-central Colorado. Ecology <br />Bureau of Land Management. 1979. Final west-central Colorado coal <br />enviornmental statement, Vol. 3. Appendix C. U.S. Department of the <br />Interior. <br />Costello, D. F. 1954. Vegetation zones in Colorado. In Manual of the <br />plants of Colorado. H. D. Harrington, ed. Chicago. <br />Cronquist, A., A. H. Holmgren, N. H. Holmgren, and J. L. Revel. 1972. <br />Intermountain flora. Hafner Publishing Company, Inc. New York. 270 pp. <br />Federal Register. Vol. 45, No. 99, Tuesday, May 20, 1980. pp. <br />33768-33781. <br />Tueller, P. T., C. D. Beeson, r. J. Tausch, N. E. West, and K. H. Rea. <br />1979. Pinyon-juniper woodlands of the Great Basin: Distribution, flora, <br />vegetal cover. USDA For. Serv. Res. Paper INT-229. 22 pp. <br /> <br />• <br />2.04-491 <br />