Chrisman, Nicholas <br/><br/>
Exploring geographic information systems  / 

 - New york :  John wiley & sons, Inc.,  1996. 
 - xvi, 298  p.:  ill.; 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0471108421 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographical 
<br/><br/><label>LC Class. No.: </label>G70.121  .C48  1997