Hayes, Doris W. <br/><br/>
Key to important woody plants of eastern Oregon and Washington 
by Doris W. Hayes and George A. Garrison. 
 - Washington  U.S. Govt. Print. Off.  1960. 
 - 227 p.  illus. 
 - United States. Forest Service. Agricultural handbook  no. 148 .
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Woody plants--Oregon.<br/>Woody plants--Washington (State)