Helfert, Erich A. Techniques of financial analysis : A guide to value creation / Erich A. Helfert. - Tenth edition. - xviii,556 pages. - The Irwin/McGraw-Hill series in finance, insurance, and real estate) . Includes index. ISBN: 0-07-229988-6 Subjects--Topical Terms: corporate finance.Cash flow.Financial statements.ration analysis.