Four software tools /
Duffy, Tim.
Belmont, Calif. : Wadsworth Pub. Co.,
c1990.
"Featuring DOS, WordPerfect 4.2/5.0, Lotus 1-2-3, and dBASE III Plus"--Label on cover.
Includes index.
Lotus 1-2-3 (Computer program)
dBase III PLUS (Computer program)
WordPerfect (Computer program)
PC-DOS (Computer file)
MS-DOS (Computer file)