Gorr Wilpen L. <br/><br/>
Learning and using geographic information systems 

 - New Delhi   Cenage Learning          2004 
 - 261p.  cm. 
<br/><br/><label>ISBN: </label>9788131507605  212.5 
<br/><br/><label>Source: </label> 09-00476, 30/04/2009, Atlantic Publisher & Distributers  General Book 
<br/><br/><label>Dewey Class. No.: </label>U:(D6,9(B), P9