Stephen J. Pyne <br/><br/>
Grove Karl Gilbert  A Great Engine of Research 

 -  University Of Iowa Press  2007 
 - American Land and Life Series .
<br/><br/><label>ISBN: </label>9781587296185 
<br/><br/><label>Subjects--Topical Terms: </label><br/> General<br/>Geologists--United States--Biography.<br/>SCIENCE