BLETHYN, Stanley  G: PARKER, Carys Y. <br/><br/>
Designing information systems 

 -  London : Butterworths  1990 
 - 367 p. 
<br/><br/><label>ISBN: </label>0000750610387 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Systems design
<br/><br/><label>Dewey Class. No.: </label>004.21  / B42