Wiederhold, Gio. <br/><br/>
Database Design /  

 - Second Ed. /  
 -  McGraw-Hill International Book Company ,   1985 
 - p751 :  
<br/><br/><label>ISBN: </label>0-07-Y66638-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers
<br/><br/><label>Dewey Class. No.: </label>Bv:4  / L7