Simpson, Alan,  1953- <br/><br/>
Understanding dBASE IV 2.0 for DOS / 
Alan Simpson. 
 - 4th ed. 
 - San Francisco, California:   Sybex,   [1993].  
 - xlii, 1008 p. :  ill. ;  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0782112560 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management<br/>Database design
<br/><br/><label>Dewey Class. No.: </label>005.7565