John Wesley Powell-William deBuys <br/><br/>
Seeing Things Whole  The Essential John Wesley Powell 

 -  Island Press  2001 
 - Pioneers of Conservation .
<br/><br/><label>ISBN: </label>9781559638722 
<br/><br/><label>Subjects--Topical Terms: </label><br/> General<br/>Arid regions--West (U.S.),Conservationists--United States--Biography.,Explorers--United States--Biography.,Geologists--United States--Biography.<br/>NATURE