Dassau, Otto <br/><br/>
An introduction to the practical use of the free geographical information system GRASS 6.0  [Book] 
Otto Dassau. 
 -  GDF Hannover BR 
<br/><br/> All. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic Information System
<br/><br/><label>Dewey Class. No.: </label>551