7 7 7/ f 



^( Pff J^tJ^ states 

 Department of 

 Agriculture 



Forest Service 



Intermountain 

 Research Station 

 Ogden, UT 84401 



Research Paper 

 INT-349 



September 1985 



*>iA/5I 



Release of a Thinned 

 Budworm-lnfested 

 Douglas-Fir/ 

 Ponderosa Pine 

 Stand 



Clinton E. Carlson 

 Robert D. Pfister 

 Leon J. Theroux 

 CarS E. Fiedler 



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