Environmental science :  understanding our changing Earth / 
 Understanding our changing Earth 
American Geological Institute. 
 - Clifton Park, NY :  Delmar/Cengage Learning,  2011. 
 - xi, 450 p. :  col. ill., col. maps ;  29 cm. 
<br/><br/><label>ISBN: </label>9781428311701  RM329.54 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.