Martin, David <br/><br/>
Geographic information systems and their socioeconomic applications 
David Martin 
 - London  Routledge  1991 
 - 182 p. : ill. ; 26 cm. 
<br/><br/>includes index 
<br/><br/><label>ISBN: </label>0415056977 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems