O'Brien, James A. <br/><br/>
Introduction to information systems / 
James A. O'Brien 
 - 7th ed 
 - Boston :  Irwin,  1991 
 - xx, 493 p 
<br/><br/><label>ISBN: </label>0256118841 0256156107 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Data processing.<br/>Management--Data processing.
<br/><br/><label>Dewey Class. No.: </label>658  / O13I