TY  - BOOK
AU  -  Duffy, tim 
TI  -  Four software tools with wordperfect 5.0/5.1. Lotus 1-2-3-, and dbase iii plus -2nd ed. 
SN  - 05341497'07
U1  - 005.36 DUF 
CY  -  Wadsworth pub. 
KW  -  Pc dos(computer program)  2. Ms-dos (computer operating system)
ER  -