Title: DOS 5.0, WordPerfect 5.1, Lotus 1-2-3 (2.2 and 2.3), dBase IV
Subjects: DBASE IV (Computer file), Lotus 1-2-3 (Computer file), WordPerfect (Computer file), Application software, WordPerfect (Computer file), Lotus 1-2-3 (Computer file), dBASE IV (Computer file), Application software.