HELFERT ERICH A. (1972). TECHNIQUES OF FINANCIAL ANALYSIS (3RD.). RICHARD D.IRWIN INC.
Chicago-čujuhus (17. p.)HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 3RD. HOMEWOOD: RICHARD D.IRWIN INC, 1972.
MLA-čujuhus (9. p.)HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 3RD. RICHARD D.IRWIN INC, 1972.
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