Ritchie, C. <br/><br/>
Relational database principles / 
Colin Ritchie. 
 - London :  Letts Educational,  1998. 
 - xi, 283 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>1858053633  No price 9781858053639 
<br/><br/><label>Nat. Bib. No.: </label>GB9956835  bnb 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relational databases.