ZUMSTEG, John Bauman, James J. dBASE IV: PC tutor / [by] John Zumsteg, James J.Bauman - [USA] QUE corporation 1991 - xix, 342 p. Includes index. ISBN: 880226331 Subjects--Topical Terms: DbaseDatabase management Dewey Class. No.: 005.7565DBA / ZUM