Handbook on geographic information systems and dig 

 - New York   UN           2000 
 - 197p Bibliography: P 115-20  cm. 
<br/><br/><label>ISBN: </label>9211614260 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cartography