Harris, Robert W. DOS, WordPerfect & Lotus office companion / Robert W. Harris. - 4th ed. - Chapel Hill, NC : Ventana Press, c1994. - xxv, 430 p. : ill. ; 23 cm. ISBN: 1566041317 Subjects--Topical Terms: WordPerfect (Computer file) Dewey Class. No.: 005.36 HAR