Tomilson, Roger. <br/><br/>
Thinking about GIS :  Geographic Information System Planning for Managers. 

 - 4th Edition. 
 - Redlands, California :  ESRI Press,  c2003. 
 - xviii, 249 p :  ill ;  23 cm. + 1 videodisc (DVD : sd., col. ; 4 3/4 in.). 
<br/><br/> Includes Index & Bibliograghic references. 
<br/><br/><label>ISBN: </label>9781589482739 :  Ksh 6,075 
<br/><br/><label>LCCN: </label>2010043129 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems.