LITERATURE CITED 



Adams, Lowell 



1950. Consumption of ponderosa pine seed by small mammals. USDA Forest Serv. , 

 Northern Rocky Mountain Forest and Range Exp. Sta. Res, Note 80, 4 p. 



1955. Pine squirrels reduce future crops of ponderosa pine cones. J. Forest. 

 53(1):35, illus. 



Boe, Kenneth N. 



1954. Periodicity of cone crops for five Montana conifers. Mont. Acad. Sci. 

 Proc. 14:5-9. 



Curtis, James D. 



1948. Animals that eat ponderosa pine seed. J. Wildlife Manage. 12 [3) : 327-328. 



Daubenmire, R. , and Jean B. Daubenraire 



1968. Forest vegetation of eastern Washington and northern Idaho. Wash. Agr. 

 Exp. Sta. Tech. Bull. 60, 104 p, illus. 



Eastman, William R. , Jr. 



1960. Eating of tree seeds by birds in Central Oregon. Oregon Forest Res. Center 

 Res. Note 42, 24 p., illus. 



Gashwiler, 3^ S, 



1965. Tree seed abundance vs. deer mouse populations in Douglas- fir clearcuts. 

 Soc. Amer. Forest. Proc, p. 219-222. 



1967. Conifer seed survival in a western Oregon clearcut. Ecology 48 (3) :431-438 > 

 illus . 



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