DeMers, Michael N. <br/><br/>
Fundamentals of geographic information systems. 

 - 3rd. 
 - New Jersey :  John Wiley,  2005. 
 - xi, 467p. : ill. 
<br/><br/> Bibliography Glossary Includes index. 
<br/><br/><label>ISBN: </label>0471451495 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems.
<br/><br/><label>LC Class. No.: </label>G70.212  / DEM