Ullman, Jeffrey D. <br/><br/>
Principles of database systems 
by Jeffrey D. Ullman 
 - Rockville,Maryland  Computer Science Press  1980 
 - 379p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Database management
<br/><br/><label>Dewey Class. No.: </label>I5371 Ul4