Disintegration of girdled western hemlock and grand fir, by 

 Austin E. Helmers. Dec. 1948. 



Suggested Montana Douglas-fir Christmas tree standards, by 

 S. Blair Hutchison and Ben M. Huey. Jan. 1949. 



The possibilities of modifying lightning storms in the North 

 Rockies, by Vincent J. Schaefer. Jan. 1949. 



