Exploring Water Resources :  GIS Investigation for the Earth Sciences 
Thomson Books / 
 - New York  Thomson Books  2007 
 - 160p.;ill:27cm. 
<br/><br/><label>ISBN: </label>0495115126 
<br/><br/><label>LC Class. No.: </label>GB656.2.H9.  / E8964 2007