Decker, Drew. , <br/><br/>
GIS data sources / 
Drew Decker. 
 - x, 193 pages :  illustrations ;  25 cm. 
<br/><br/><label>ISBN: </label>0471355054 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems --Informations resources.
<br/><br/><label>LC Class. No.: </label>G70.212   / .D42 2001