Codd, E F  <br/><br/>
Relational model for database management:   version 2 

 - New York:   Addison- Wesley Publishing Company,    1990 
 - xxii, 538p.  
<br/><br/><label>ISBN: </label>0-201-14192-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General management 
<br/><br/><label>Subjects--Index Terms: </label>Database management  
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3.06   / N0