McGrath, Jack., <br/><br/>
1-2-3 at work /  
Jack McGrath. 
 - New York :  Brady,  1990. 
 - xxii, 678 pages :  illustrations ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0135117003 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Computer programs.