Bernhardsen, Tor. <br/><br/>
Geographic information systems :  an introduction / 
Tor Bernhardsen. 
 - 2nd ed. 
 - New York :  Wiley,  c1999. 
 - xvi, 372 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references (p. 362-364) and index. 
<br/><br/><label>ISBN: </label>0471321923 (acidfree paper) 
<br/><br/><label>LCCN: </label>98038195  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems.
<br/><br/><label>LC Class. No.: </label>G70.212  / .B473 1999 
<br/><br/><label>Dewey Class. No.: </label>910/.285 BER 1999