Introdution to Geographical information systems 

 - 2nd ed 
 - Delhi  Pearson Education  2004 
 - xv, 295  Pb 
<br/><br/><label>ISBN: </label>81-7808-982-3 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>526