Techniques of financial analysis / Erich A. Helfert. Helfert, Erich A. Corporations Finance. Cash flow. Financial statements. Ratio analysis. HG4011 .H39 1967 332 HET Includes bibliographies. Homewood, Ill. : R.D. Irwin, 1967. 1967. 1967 Text viii, 227 p. : eng