Date, C. J. <br/><br/>
An introduction to database systems 
C. J. Date                                                   
 - 2nd ed. 
 - Massachusetts  Addison-Wesley  1977 
 - xxiii, 536p. 
<br/><br/><label>ISBN: </label>0-201-01530-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database Systems<br/>NASA Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>519.68  / DAT