

.•*-'<»Q 



From the collection of the 



d 

 m k 



o Prejinger 

 '^ V ^Jjibrary 



San Francisco, California 

 2008 



Technical 

 Coordinators 



Sally Campbell is a pathologist, Pacific Northwest Region, PO Box 3623, Portland, OR 

 97208, and Leon Liegel is a research forester. Pacific Northwest Research Station, 

 3200 SW Jefferson Way, Corvallis, OR 97331 . 



