ERICKSON, FRITZ D. COMPUTERS: CONCEPTS, IMPLICATIONS AND APPLICATION WITH DOS 5.0, WORDPERFECT 5.1 LOTUS 1-2-3 RELESSE 2.4, AND DBAS IV 1.5 / ERICKSON, FRITZ D. - [S.N] : BUSINESS AND EDUCATIONAL TECHNOLOGY ، 1994 Subjects--Topical Terms: APPLICATION SOFTWARECOMPUTER PROGRM Dewey Class. No.: 005.713 / E C