Grupe, Fritz H. Using WordPerfect 5.1, Lotus 1-2-3/version 3.0, and dBase IV / Fritz H. Grupe, Kerry J. Chase. - [Dubuque, IA]: W.C. Brown Publishers, [1992]. - 1 v. (various pagings) ; 28 cm. Incledes index. ISBN: 0697133419 Subjects--Uniform Titles: dBASE IV (Computer file)Lotus 1-2-3 (Computer file)WordPerfect (Computer file) Subjects--Topical Terms: Application software Dewey Class. No.: 005.52