Date, CJ. <br/><br/>
Introduction to database systems 

 - 3rd ed. 
 - Delhi: Narosa  1981 
 - xv,580p.  22 cm. 
<br/><br/><label>ISBN: </label>085015589 
<br/><br/><label>Dewey Class. No.: </label>001.644,  / DAT