O  1951 <br/><br/>
Principles of distributed database systems / 
M.Tamer O 
 - London :  Prentice-Hall International,  1991. 
 -  24cm. 
<br/><br/><label>LC Class. No.: </label>QA76.9.D3 
<br/><br/><label>Dewey Class. No.: </label>005.758