RESEARCH NOTE NO. 6 



April 1954 



^ LOGGING DAMAGE AFFECTS BARK BEETLE RESISTANCE 

 OF RESIDUAL PONDEROSA PINE ST/iNDS K 



By 



Philip 0. Johnson, Entomologist^ 



OF * 



UNITED STATES DEPARTI^IENT OF AGRICULTURE 

 FOREST SERVICE 

 Xnte mountain Forest and Range Experiment Station 



Ogden, Utah 



