Clifford, Sarah Hutchinson. <br/><br/>
DOS 5.0, WordPerfect 5.1, Lotus 1-2-3 (2.2 and 2.3), dBase IV / 
Sarah E. Hutchinson, Stacey C. Sawyer, Glen J. Coulthard. 
 - Burr Ridge, Ill. :  Irwin,  1994. 
 - 1 v. (various pagings) :  ill. ;  28 cm. 
 - The Irwin advantage series for computer education .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0256153221 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Application software.
<br/><br/><label>Dewey Class. No.: </label>005.365