Introduction to geographical information systems 
Ian Heywood...[et al.] 
 - 2nd ed. 
 - New Delhi  Pearson Education  2006 
 - xv,287p. ;   24cm. 
<br/><br/> Library has 4th ed. also. 
<br/><br/><label>ISBN: </label>8177587846 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems 
<br/><br/><label>Dewey Class. No.: </label>910.10015  / INT