(916) Keen, F. P., and K. A. Salman. 



1942. Progress in pine beetle control through tree selection. J. Forest. 40: 854-858. 



(917) Keith, James O. 



1965. The Abert squirrel and its dependence on ponderosa pine. Ecology 46: 150-163. 



(918) Kemp, Paul D. 



1957. Regression coefficients for computing cubic -foot volume of Rocky Mountain 



trees. U.S. Forest Serv. Intermountain Forest and Range Exp. Sta. Res. 

 Pap. 40, 12 pp. 



(919) and M. E. Metcalf. 



1948. Tables for approximating volume growth of individual trees. U.S. Forest Serv. 



Northern Rocky Mountain Forest and Range Exp. Sta., Sta. Pap. 11, 14 pp. 



(920) Kempff, Gerhard. 



1928. Non- indigenous western yellow pine plantations in northern Idaho. Northwest 

 Sci. 2: 54-58. 



(921) Kenaga, D. L. 



1963. Effect of treating conditions on dimensional behavior of wood during polyethylene 

 glycol soak treatments . Forest Prod. J. 13: 345-349. 



(922) and E. B. Cowling. 



1959. Effect of gamma radiation on ponderosa pine: hygroscopicity , swelling, and 

 decay susceptibility. Forest Prod. J. 4: 112-116. 



(923) , J. P. Fennessey, and V. T. Stannett. 



1962. Radiation grafting of vinyl monomers to wood. Forest Prod. J. 12: 161-168. 



(924) Keng, Hsuan, and E. L. Little, Jr. 



1961. Needle characteristic of hybrid pines. Silvae Genet. 10: 131-146. 



(925) Keniston, R. F. , and V. A. Clements. 



1943. Taper and volume tables for ponderosa pine on site IV- 100 in California. U.S. 



Forest Serv. Calif. Forest and Range Exp. Sta. Res. Note 32, 9 pp. 



(926) Kennedy, Fred H. 



1961. Pilot test watershed projects on the Arizona National Forests. Soc. Amer. 



Forest. Proc. 1960: 164-167. 



(927) 



1962. Thinning ponderosa pine. Ariz. Watershed Symp. 6thAnnu. Proc. 1962: 13-16. 



(928) Kennedy, Robert B. 



1962. Tractor logging layout in the ponderosa pine region. Pacific Logging Congr. 

 Loggers Handb. 22(Sect. 1): 12-15, 116. 



(929) Kenney, Nathaniel T. 



1956. Our green treasury, the National Forests. Nat. Geogr. Mag. CX(3): 287-324. 



(930) Kerr, H. S. 



1913. Notes on the distribution of lodgepole and yellow pine in the Welker Basin. 

 Forest. Quart. 11: 509-515. 



(931) Keyes, Joseph, and Clarence F. Smith. 



1943. Pine seed -spot protection with screens in California. J. Forest. 41: 259-264. 



58 



