Marsh Geoge P <br/><br/>
Earth as modified by human action 

 - N.Y  Scribner Armstrong        1874 
 - American enviromental study .
<br/><br/><label>Standard No.: </label>89,455 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HUMAN GEOGRAPHY
<br/><br/><label>Dewey Class. No.: </label>U47, A4