Metzelaar, Lawrence C. <br/><br/>
Hands-on :  MS DOS, Wordperfect 5.0 (includes version 4.2), dBASE III Plus, Lotus 1-2-3, 2.2 (includes version 2.01) / 
Lawrence C. Metzelaar, Marianne B. Fox. 
 - 2nd ed. 
 - Redwood City, Calif. :  Benjamin/Cummings Pub. Co.,  c1990. 
 - xiv, 368 p. :  ill. 
<br/><br/><label>ISBN: </label>0805345027 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>MS-DOS (Computer file)<br/>WordPerfect (Computer file)<br/>dBase III plus (Computer file)<br/>Lotus 1-2-3 (Computer file)