U. S. FOREST SERVICE . ;. w.. -i :i ^ J^--^ fa ^tk yU^^u 



RESEARCH . PAPER INT-7 

 1963 



- 



A9 9.9 F764U 



EFFECTS OF BROOM RUSTS ON SPRUCE AND FIR 



ROGER S. PETERSON 



IVISION OF FOREST DISEASE AND 

 TIMBER MANAGEMENT RESEARCH 



