Walker, D.W. (David William), 1943- <br/><br/>
Computer based information systems :  an introduction / 
D.W. Walker 
 - 2nd. ed. 
 - Sydney :  Pergamon Press,  1989 
 - 419 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0080400663 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing<br/>System design<br/>Information storage and retrieval systems