HELFERT, E. A. (1196). Techniques of financial analysis. Richard D. Irwin.
Chicago-čujuhus (17. p.)HELFERT, Erich A. Techniques of Financial Analysis. Homewood, Ill: Richard D. Irwin, 1196.
MLA-čujuhus (9. p.)HELFERT, Erich A. Techniques of Financial Analysis. Richard D. Irwin, 1196.
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