Topological data structures for grographic information systems  V.7. Spatial Semantics 

 -  1978 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Cartography<br/>Geography<br/>Topology<br/>Information systems<br/>Surveying<br/>topographic
<br/><br/><label>Dewey Class. No.: </label>526.98  / I5T