Hurn, Jeff <br/><br/>
GPS  a guide to the next utility 
Jeff Hurn 
 - 76 p.  il.  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sistemas de información geográfica(GIS)
<br/><br/><label>Dewey Class. No.: </label>621.3678  / HUR