Helfert, Erich A. Techniques of financial analysis : a modern approach / Erich A. Helfert. - 9th ed. - Chicago : Irwin, 1997. - xvii, 457 p. ISBN: 0786311207 : Subjects--Topical Terms: Cash flow.Financial statements.Corporations--Finance. LC Class. No.: HG4026 / .H44 1997