Duffy, Tim <br/><br/>
Four software tools : DOS for IBM PC and MS DOS, word processing using wordstar, spreadsheets using Lotus 1-2-3, and data base management using dBase II & III/ 
Tim Duffy. 
 - Belmont, California:  Wadsworth Pub. Co.,  1986. 
 - xix, 535p.:  ill.;  28cm. 
<br/><br/><label>ISBN: </label>0534064507 
<br/><br/><label>Subjects--Topical Terms: </label><br/>dBase II & III.<br/>LOTUS 1-2-3 (Computer program).<br/>MS-DOS (Computer operating system).<br/>PC DOS (Computer operating system).<br/>WordStar (Computer program).