Clifford, Nicholas J. <br/><br/>
Key methods in geography 

 - 
 - London  Sage Publications  2003 
 - xviii, 572p.   
<br/><br/>   
<br/><br/><label>ISBN: </label>0-7619-7492-X 
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Human geography  Geographical data collection  Geographical research 
<br/><br/><label>Dewey Class. No.: </label>911