Using microcomputer applications : a computer lab manual with DOS, WordPerfect, VP-Planner Plus, and dBASE III Plus (with Lotus 1-2-3 Appendix) /
Robertson, Douglas F.
Robertson, Donald R.
New York ; London : Harcourt Brace Jovanovich, c1990.
Microcomputers
Microcomputer programs.
IBM microcomputers