Gorr, Wilpen L. <br/><br/>
Learning and usinggeographic information systems 

 - New Delhi  Cengage Learning  2004 
 - 261p.  24cm 
<br/><br/><label>ISBN: </label>9788131507605 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems<br/>Geography
<br/><br/><label>Dewey Class. No.: </label>910.285  / GOR