Colman-Sadd, S.P. <br/><br/>
Geolegend: a database system for managing geological map units in a geographic information system 

 - Oxford  Elsevier Science  August 1997 
 - pp. 715-724  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BASES DE DATOS<br/>MAPAS GEOLOGICOS<br/>SISTEMAS DE INFORMACION GEOGRAFICA