HANSON,Owen. <br/><br/>
Design of computer data files 

 - 2nd ed 
 - London  Pitman Pub Ltd  1988 
 - xii,419p. 
<br/><br/><label>ISBN: </label>0-273-02530-9 
<br/><br/><label>Dewey Class. No.: </label>1.6442