Welch, Roy <br/><br/>
Proceedings of the symposium: mapping and geographic information systems May 31 -  June 3, 1994 Anthens, Georgia, U.S.A. 

 - Georgia  1994 
 - xiii,710p.  30cm. 
<br/><br/><label>LC Class. No.: </label>QTO G70.2.G458P76