Lehman, John A. Systems design in the fourth generation : object-based development using dBASE / John A. Lehman. - New York : Wiley, 1991. - x, 381 p. : ill. ; 24 cm. - Wiley series in computing and information processing . - 005.75/65 . Includes bibliographical references and index. ISBN: 0-471-52752-1 Subjects--Uniform Titles: dBase III.dBase IV (Computer file) Subjects--Topical Terms: System design. Dewey Class. No.: 005.75/65