TY  - BOOK
AU  - Duffy,Tim
TI  - Four software tools: DOS for IBM PC and MS DOS word processing using wordperfect 5.0 and 5.1 spreadsheets using lotus 1-2-3 releases 2.01 and 2.2 database management using dBase 111 plus
SN  - 0534149707
PY  - 1991///
CY  - Belmont, Ca.
PB  - Wadsworth Publishing Co.
KW  - PC DOS (Computer operating system)
KW  - MS-DOS (Computer operating system)
KW  - WordPerfect (Computer program)
KW  - Lotus 1-2-3 (Computer program)
KW  - dBase III Plus (Computer program)
ER  -