Environmental science :  Understanding our changing Earth / 
American Geological Institute. 
 - Clifton Park, NY :  Delmar/Cengage Learning,  2011. 
 - xi, 450 p. :  col. ill., col. maps ; 
<br/><br/><label>ISBN: </label>9781428311701 (hbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.
<br/><br/><label>Dewey Class. No.: </label>R-628   / AGI-E