Walker, D.W. (David William) <br/><br/>
Computer based information systems :  an introduction / 
D.W. Walker 
 - Sydney :  Pergamon Press,  1988 
 - 370 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0080344356 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing<br/>Information storage and retrieval systems