Lowenthal, David <br/><br/>
George Perkins Marsh : Prophet of Conservation 
Lowenthal, David 
 -  University of Washington Press  2009 
 - On-campus e-Book by ebrary under Digital Library Program of Higher Education Commission (HEC) of Pakistan 
<br/><br/><label>ISBN: </label>9780295989853     
<br/><br/><label>Subjects--Topical Terms: </label><br/>History