Erickson, Fritz J. <br/><br/>
Microcomputer applications with DOS 5.0, WordPerfect 5.1, Lotus 1-2-3 Release 2.3, and dBase IV 1.5 / 
Fritz J. Erickson and John A. Vonk. 
 - Dubuque, IA :  Business and Educational Technologies,  c1994. 
 - various pages :  illustrations ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0697239640 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Application software.
<br/><br/><label>Dewey Class. No.: </label>005.365 FRI