FENSOM, K. G. 1959. The characteristics and 

 significance of spruce. Forest Prod. Lab., 

 Vancouver. 21 pp. 



FERNOW, B. E. 1912. Forest resources and 

 problems of Canada. Soc. Amer. Foresters 

 Proc. 7: 133-144. 



Engelmann spruce is characteristic of the 

 "southern Rocky Mountain type." 



FETHEROLF, JAMES M. 1917. Aspen as a 

 permanent forest type . Jour. Forestry 15: 

 757-760. 



Distribution of Engelmann spruce; succession 

 and community taxonomy. 



FETHEROLF, N. J. (See Baker, Korstian, and 

 Fetherolf. 1921; and Korstian and Fetheroif , 

 1921) 



FICHTER, E. 1939. An ecological study of 

 Wyoming spruce -fir forest arthropods with 

 special reference to stratification. Ecol. 

 Monog. 9: 183-215. 



Community description. 



FINCH , THOMAS L. 1948. Effect of bark 

 growth in measurement of periodic growth of 

 individual trees. U.S. Forest Serv., North. 

 Rocky Mountain Forest and Range Expt. Sta. 

 Res. Note 60, 3 pp. 



FINCH, THOMAS L. 1951. How fast is timber 

 growing in Eastern Montana? U.S. Forest 

 Serv., North. Rocky Mountain Forest and 

 Range Expt. Sta. Res. Note 88, 7 pp. 



Data on volume growth. 



FINCH, THOMAS L. (See Hodge, Brown, and 

 Finch. 1949) 



FINCH , THOMAS L. , W. C. HODGE, and M. E. 

 METCALF. 1950. Forest resources of south 

 central Montana. U.S. Forest Serv., North. 

 Rocky Mountain Forest and Range Expt. Sta. 

 Paper 23, 18 pp. 



FISHER, GEORGE M. 1935. Comparative ger- 

 mination of tree species on various kinds of 

 surface -soil material in the western white 

 pine type. Ecology 16: 606-611. 



Reproduction study. 



FITZGERALD, O. A. 1954. Beetle proofing 

 the big timber country. Amer. Forests 60(1): 

 24-25, 53-56. 



FLEMING, WALTER E. , FRANCIS E. BAKER, 

 and LOUIS KOBLTTZKY. 1937. Effect of 

 applying acid lead arsenate for control of 

 Japanese beetle larvae on the germination and 

 development of evergreen seedlings. Jour. 

 Forestry 35: 679-688. 



Did not affect germination of Engelmann 

 spruce seeds, but retarded seedling growth. 



FOILES, M. W. 1961. Effects of thinning seed 

 spots on growth of three conifers in the Inland 

 Empire. Jour. Forestry 59: 501-503. 



Number of seedlings per spot affected dia- 

 meter growth of 17-year-old Engelmann spruce, 

 western white pine , and ponderosa pine . 



FORBES, R. D. (Ed.) 1956. Forestry Handbook. 

 New York: Ronald Press. Variously paged. 



Yield and volume data. 



FOSTER, J. H. (See Hodson and Foster. 1910) 



FRANKLIN, JERRY F. , and JAMES M. TRAPPE. 

 1963. Plant communities of the northern 

 Cascade Range: A reconnaissance. North- 

 west Sci. 37: 163-164. (Abstract.) 



FREYTAG, GEORGE F. , and JOHN F. REED. 

 1948. Specific differences in the resin sac 

 pattern in the needles of Engelmann spruce 

 and Colorado blue spruce. Jour. Colo.-Wyo. 

 Acad. Sci. 3(6): 39-40. 



FREYTAG, GEORGE F. (See Reed and Freytag. 

 1949) 



FROLICH, H. J. 1957. Zuchtungsarbeiten im 

 Lehrforstamt Gahrenberg. (Tree breeding in 

 the Gahrenberg instructional forest.) Forst- 

 archiv 28: 170-175. 



Provenance trials. 



FROST, F. (See Bathen and Frost. 1951) 



FROTHINGHAM, E. H. 1909. Douglas fir: A 

 study of the Pacific Coast and Rocky Mountain 

 forms. U.S. Dept. Agr., Forest Serv. Cir. 

 150, 38 pp. 



Community data . 



FUNK, B. 1950. Blitz of the beetles . Reader's 

 Digest 56: 100-102. 



FURNISS, MALCOLM M. 1957. Entomological 

 aspects of the 1955 southern Idaho spruce 

 budworm control project. U.S. Forest Serv. , 



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