Gorr, Wilpen L. <br/><br/>
Learning and Using Geographic Information Systems 

 - Boston  Course Technology,Thomson Learning  2006 
 - 219p. hb. 
<br/><br/><label>ISBN: </label>9780619217471 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GIS<br/>GIS resources
<br/><br/><label>LC Class. No.: </label>G70.212   / .G744 2007