Christie Linda Gail. <br/><br/>
dBase III Plus.Educational Version / 
Christie Linda Gail. 
 - New York :  John Wiley,  1987. 
 - 394s.,wiele liczb. ;  23cm. 
<br/><br/> ISSN 49 
<br/><br/><label>ISBN: </label>0471855111 
<br/><br/><label>ISSN: </label>49 
<br/><br/><label>Universal Decimal Class. No.: </label>681.3.06