Obermeyer Nancy J <br/><br/>
Managing geogrpahic information systems 

 - New York  Gilford Press U S A       1994 
 - xiii,226p. Bib p. 203-18  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography-Modern
<br/><br/><label>Dewey Class. No.: </label>U:(D6,9(B), N4