Longhorn, Roger A. <br/><br/>
Geographic information :  value, pricing, production, and consumption / 
Roger A. Longhorn and Michael Blakemore 
 - Boca Raton :  Taylor & Francis,  2008 
 - xvi, 230 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780849334146 (alk. paper)  RM272.38 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographical information systems--Economic aspects