THE AUTHOR 



R. G. Krebill, Plant Pathologist and leader of the project on native 

 rusts of western conifers at Logan, joined the Intermountain Sta- 

 tion staff in 1962. He holds the bachelor of science degree in 

 forestry from the University of California and the doctoral degree 

 in plant pathology from the University of Wisconsin. 



The author is stationed at the Forestry Sciences Laboratory, 

 Logan, Utah, which is maintained in cooperation with Utah State 

 University. 



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