CORMACK, ROBERT G. H. 1953. A survey of 

 forest succession in the eastern Rockies. 

 Forestry Chron. 29: 218-323. 



COSTELLO, DAVID F. 1944. Important species 

 of the major forage types in Colorado and 

 Wyoming. Ecol. Monog. 14: 105-134. 



Community description. 



COSTELLO, DAVID F. 1954. Vegetation zones 

 in Colorado. IN: Harrington, H. D. Manual 

 of the plants of Colorado, pp. iii-x. Denver: 

 Sagebooks. 



Reports distribution of Engelmann spruce. 



COSTELLO, DAVID F. , and RAYMOND PRICE. 

 1939. Weather and plant -development data as 

 determinants of grazing periods on mountain 

 range. U.S. Dept. Agr. Tech. Bui. 686, 30 

 pp. 



Relates distribution of the species in Ephraim 

 Canyon, central Utah, to climatic data. 



COTTAM, WALTER P. 1928. Preliminary 

 studies of evaporation rates at various eleva- 

 tions on Mt. Timpanogos. Utah Acad. Sci. 

 Proc. 5: 9-10. 



Climatic data; Utah. 



COTTAM, WALTER P. 1929. Some phytogeo- 

 graphic features of Utah. Utah Acad. Sci. 

 Proc. 6: 6-7. 



Discusses local distribution of Engelmann 

 spruce . 



COTTAM, WALTER P. 1930. Some unusual 

 floristic features of the Uintah Mountains, 

 Utah. Utah Acad. Sci. Proc. 7: 48-49. 



Distribution of Engelmann spruce. 



COTTAM, WALTER P. 1947. Is Utah Sahara 

 bound? Univ. Utah Bui. 37(11), 40 pp. 



Mentions distribution of Engelmann spruce in 

 Utah. 



COX, C. F. 1933. Alpine plant succession on 

 James Peak, Colorado. Ecol. Monog. 3: 299- 

 372. 



Distribution of Engelmann spruce; succession. 



COX, W. T. 1911. Reforestation on the 

 National Forests. U.S. Dept. Agr., Forest 

 Serv. Bui. 98, 57 pp. 



Discusses reproduction of Engelmann spruce. 



CRAIG, R. D. (See Whitford and Craig. 1918) 



CUMMINGS, L. J. , and PAUL D. KEMP. 1940. 

 Forest increment in north Idaho. U.S. Forest 

 Serv. , North. Rocky Mountain Forest and 

 Range Expt. Sta. Forest Surv. Release 18, 

 74 pp. 



CURTIS, JAMES D. 1958. Germinative capacity 

 of Engelmann spruce seed. U.S. Forest 

 Serv., Intermountaih Forest and Range Expt. 

 Sta. Res. Note 58, 3 pp. 



Reports tests for germinative capacity of 

 seed collected from eight National Forests in the 

 Intermountain region. 



DALLIMORE , W. , and A. BRUCE JACKSON. 

 1948. A handbook of Coniferae including 

 Ginkgoaceae. 3d ed. 682 pp. London: 

 Edward Arnold. 



General description of Engelmann spruce and 

 distribution of Engelmann spruce in Europe. 



DANIEL, T. W. 1961. Rodent population of the 

 spruce -fir type of Logan Canyon. Utah Acad. 

 Sci., Arts and Letters Proc. 32: 35-36. 



DANIEL, T. W. 1962. The middle and southern 

 Rocky Mountain Region. IN: Barrett, John W. 

 Regional silviculture of the United States. 

 Chap. 8, pp. 334-405. New York: Ronald 

 Press. 



Review of silviculture. 



DARROW, ROBERT A. 1944. Arizona range 

 resources and their utilization, I. Cochise 

 County. Ariz. Expt. Sta. Tech. Bui. 103, 

 pp. 311-366. Tucson: Univ. Ariz. 



Distribution of Engelmann spruce and range 

 condition, trend, and grazing capacity of Engel- 

 mann spruce forests. 



DAUBENMIRE, R. F. 1943. Vegetational zona- 

 tion in the Rocky Mountains. Bot. Rev. 9: 

 325-393. 



This review includes Engelmann spruce. 



DAUBENMIRE, R. F. 1946. The life zone prob- 

 lem in the northern Intermountain region. 

 Northwest Sci. 20: 28-38. 



DAUBENMIRE, R. F. 1952. Forest vegetation 

 of northern Idaho and adjacent Washington and 

 its bearing on concepts of vegetation classifi- 

 cation. Ecol. Monog. 22: 301-330. 



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