Longley Paul A <br/><br/>
Geographical information systems 

 -  1999 
<br/><br/><label>Standard No.: </label>132113 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D6,8(2),9(U), N9.1-N9.2