Wellesley Software (Firm). <br/><br/>
Learning SQL /  [Books]. 
Wellesley Software.  
 - Englewood Cliffs, NJ :   Prentice Hall,   1991. 
 - viii, 231 p. :   ill. ;   24 cm. +   1 computer disk (5 1/4 in.) 
<br/><br/> System requirements for computer disk: IBM PCs (including PC compatibles); MS-DOS.  Computer disk in pocket.  "Errata for disk directions" inserted.  Includes index. 
<br/><br/><label>ISBN: </label>0135287049 
<br/><br/><label>LCCN: </label>90008785 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SQL (Computer program language)