ACM <br/><br/>
PROCEEDINGS OF THE 9TH ACM SIGACT-SIGMOD-SIGART SYMPOSIUM ON PRINCIPLES OF DATABASE SYSTEMS, NASHVIL 

 - NEW YORK  ACM  1990 
 -  425 
<br/><br/> SC-10 
<br/><br/><label>ISBN: </label>NCST  29 
<br/><br/><label>Dewey Class. No.: </label>774