Duffy, Tim. <br/><br/>
Four software tools : DOS for IBM PC and MS DOS, word processing using WordStar 5.5, spreadsheets using Lotus 1-2-3 release 2.01, database management using dBase III plus / Tim Duffy. 

 - 2nd ed. 
 - Belmont, Calif. : Wadsworth, c1990. 
 - 1 v. (various pagings) : ill. ; 28 cm. 
<br/><br/><label>ISBN: </label>0534116701 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PC-DOS (Computer file)               MS-DOS (Computer file)               WordStar (Computer file)               Lotus 1-2-3 (Computer file)              dBase III plus (Computer file)
<br/><br/><label>Dewey Class. No.: </label>005.36 DUF