Research natural area needs in the Pacific Northwest :  a contribution to land-use planning / 
by C. T. Dryness...[et. al.] 
 - Washington, D.C. :  United States Department of Agriculture,  1975 
 - viii, 231 p. :  ill. ;  31 cm. 
<br/><br/> PNW-38 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil--Conservation<br/>Landscape protection
<br/><br/><label>Dewey Class. No.: </label>333.7316