U. S. Forest Service *4.: . 



Research Paper INT-20 



1965 u£Cl"1965 



A TECHNIQUE FOR SAMPLING POPULATIONS OF 

 THE MOUNTAIN PINE BEETLE 



Robert W. Carlson and Walter E. Cole 



INTERMOUNTAIN FOREST & RANGE EXPERIMENT STATION 



FOREST SERVICE 

 U. S. DEPARTMENT OF AGRICULTURE 



OGDEN, UTAH 



