An introduction to geographical information systems / 
 Geographical information systems 
Ian Heywood, Sarah Cornelius, and Steve Carver. 
 - 2nd ed. 
 - Delhi :  Pearson,  2007. 
 - xv, 287 p. :  ill. (some col.), col. maps ;  25 cm. 
<br/><br/>Includes bibliographical references (p. 255-270). 
<br/><br/><label>ISBN: </label>8177587846 9788177587845 
<br/><br/><label>LCCN: </label>2002075994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems.
<br/><br/><label>LC Class. No.: </label>G70.212  / .H49 2002 
<br/><br/><label>Dewey Class. No.: </label>910.285  / INT