U. S. FOREST SERVICE 

 RESEARCH PAPER INT-38 

 1967 



5tP -o 196/ 



CURRENT SOt;.iu.ou:tDS 



Pole IukMh^ 



L 



1 



CHARLES A. WELLNER and DAVID P. LOWERY 



INTERMOUNTAIN FOREST & RANGE EXPERIMENT STATION 



FOREST SERVICE 

 U. S. DEPARTMENT OF AGRICULTURE 



OGDEN, UTAH 



