Halvorson, Curtis H. 



1965. Annual Progress Report, Project C-15. Denver Wildlife Res. Center, Bur. 

 Sports Fisheries and Wildlife, USDI , 10 p. 



1966. Annual Progress Report, Project C-15. Denver Wildlife Res. Center, Bur. 

 Sports Fisheries and Wildlife, USDI, 10 p. 



Roeser, Jacob, Jr. 



1941. Some aspects of flower and cone production in ponderosa pine. J. Forest. 

 39(6) :534-536, illus. 



Smith, Clarence F. 



1943. Relationship of forest wildlife to pine reproduction. J. Wildlife Manage. 

 7(1) :124-125. 



Squill ace, A. E. 



1953. Effect of squirrels on the supply of ponderosa pine seed. USDA Forest 



Serv. , Northern Rocky Mountain Forest and Range Exp. Sta. Res. Note 131, 4 



, and Lowell Adams 



1950. Dispersal and survival of seed in a partially cut ponderosa pine stand. 



USDA Forest Serv., Northern Rocky Mountain Forest and Range Exp. Sta. Res. 

 Note 79, 4 p. 



West, Neil E. 



1968. Rodent- influenced establishment of ponderosa pine and bitterbrush seedling 

 in central Oregon. Ecology 49 (5) : 1009-1011 , illus. 



■tfr u s GOVERNMENT PRINTING OFFICE 1972- 780-568 § 76 REGION 



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